<?xml version="1.0" encoding="UTF-8" ?>
<xbrli:xbrl
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
xmlns:xbrli="http://www.xbrl.org/2003/instance"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
xmlns:dei="http://xbrl.us/dei/2009-01-31"
xmlns:rr="http://xbrl.sec.gov/rr/2010-02-28"
xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
xmlns:us-types="http://xbrl.us/us-types/2009-01-31"
xmlns:link="http://www.xbrl.org/2003/linkbase"
xmlns:vanguard="http://vanguard/20100727">
<link:schemaRef
xlink:href="wellesley-20130125.xsd"
xlink:type="simple"/>
<rr:ShareholderFeesCaption
contextRef="v_Retail_S000004405">Shareholder Fees (Fees paid directly from your investment)</rr:ShareholderFeesCaption>
<rr:ShareholderFeesCaption
contextRef="v_Participant2_S000004405">Shareholder Fees (Fees paid directly from your investment)</rr:ShareholderFeesCaption>
<rr:ShareholderFeesCaption
contextRef="v_Participant_S000004405">Shareholder Fees (Fees paid directly from your investment)</rr:ShareholderFeesCaption>
<rr:OperatingExpensesCaption
contextRef="v_Retail_S000004405">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
<rr:OperatingExpensesCaption
contextRef="v_Participant2_S000004405">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
<rr:OperatingExpensesCaption
contextRef="v_Participant_S000004405">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
<rr:PerformanceTableHeading
contextRef="v_Retail_S000004405">Average Annual Total Returns for Periods Ended December 31, 2012</rr:PerformanceTableHeading>
<rr:PerformanceTableHeading
contextRef="v_Participant2_S000004405">Average Annual Total Returns for Periods Ended December 31, 2012</rr:PerformanceTableHeading>
<rr:PerformanceTableHeading
contextRef="v_Participant_S000004405">Average Annual Total Returns for Periods Ended December 31, 2012</rr:PerformanceTableHeading>
<rr:BarChartAndPerformanceTableHeading
contextRef="v_Participant_S000004405">Annual Total Returns</rr:BarChartAndPerformanceTableHeading>
<rr:ExpenseHeading
contextRef="v_Participant_S000004405">Fees and Expenses</rr:ExpenseHeading>
<rr:ObjectiveHeading
contextRef="v_Participant_S000004405">Investment Objective</rr:ObjectiveHeading>
<rr:RiskHeading
contextRef="v_Participant_S000004405">Primary Risks</rr:RiskHeading>
<rr:RiskReturnHeading
contextRef="v_Participant_S000004405">Risk/Return</rr:RiskReturnHeading>
<rr:StrategyHeading
contextRef="v_Participant_S000004405">Primary Investment Strategies</rr:StrategyHeading>
<rr:PortfolioTurnoverRate
decimals="2"
contextRef="v_Participant_S000004405"
unitRef="pure">0.33</rr:PortfolioTurnoverRate>
<rr:ProspectusDate
contextRef="v_Participant_S000004405">2013-01-25</rr:ProspectusDate>
<rr:IndexNoDeductionForFeesExpensesTaxes
contextRef="v_Participant_S000004405">(reflect no deductions for fees or expenses)</rr:IndexNoDeductionForFeesExpensesTaxes>
<rr:BarChartAndPerformanceTableHeading
contextRef="v_Participant2_S000004405">Annual Total Returns</rr:BarChartAndPerformanceTableHeading>
<rr:ExpenseHeading
contextRef="v_Participant2_S000004405">Fees and Expenses</rr:ExpenseHeading>
<rr:ObjectiveHeading
contextRef="v_Participant2_S000004405">Investment Objective</rr:ObjectiveHeading>
<rr:RiskHeading
contextRef="v_Participant2_S000004405">Primary Risks</rr:RiskHeading>
<rr:RiskReturnHeading
contextRef="v_Participant2_S000004405">Risk/Return</rr:RiskReturnHeading>
<rr:StrategyHeading
contextRef="v_Participant2_S000004405">Primary Investment Strategies</rr:StrategyHeading>
<rr:PortfolioTurnoverRate
decimals="2"
contextRef="v_Participant2_S000004405"
unitRef="pure">0.33</rr:PortfolioTurnoverRate>
<rr:ProspectusDate
contextRef="v_Participant2_S000004405">2013-01-25</rr:ProspectusDate>
<rr:IndexNoDeductionForFeesExpensesTaxes
contextRef="v_Participant2_S000004405">(reflect no deduction for fees or expenses)</rr:IndexNoDeductionForFeesExpensesTaxes>
<rr:BarChartAndPerformanceTableHeading
contextRef="v_Retail_S000004405">Annual Total Returns</rr:BarChartAndPerformanceTableHeading>
<rr:ExpenseHeading
contextRef="v_Retail_S000004405">Fees and Expenses</rr:ExpenseHeading>
<rr:ObjectiveHeading
contextRef="v_Retail_S000004405">Investment Objective</rr:ObjectiveHeading>
<rr:RiskHeading
contextRef="v_Retail_S000004405">Primary Risks</rr:RiskHeading>
<rr:RiskReturnHeading
contextRef="v_Retail_S000004405">Risk/Return</rr:RiskReturnHeading>
<rr:StrategyHeading
contextRef="v_Retail_S000004405">Primary Investment Strategies</rr:StrategyHeading>
<rr:PortfolioTurnoverRate
decimals="2"
contextRef="v_Retail_S000004405"
unitRef="pure">0.33</rr:PortfolioTurnoverRate>
<rr:ProspectusDate
contextRef="v_Retail_S000004405">2013-01-25</rr:ProspectusDate>
<rr:IndexNoDeductionForFeesExpensesTaxes
contextRef="v_Retail_S000004405">(reflect no deductions for fees, expenses, or taxes)</rr:IndexNoDeductionForFeesExpensesTaxes>
<rr:BarChartNarrativeTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund's Investor Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index and a composite bond/stock index. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at800-662-7447.&lt;/p&gt;</rr:BarChartNarrativeTextBlock>
<rr:ExpenseExampleHeading
contextRef="v_Participant_S000004405">&lt;p&gt;Example&lt;/p&gt;</rr:ExpenseExampleHeading>
<rr:ExpenseExampleNarrativeTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The following example is intended to help you compare the cost of investing in the Fund's Investor Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Shares provide a return of 5% a year and that total annual fund operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/p&gt;</rr:ExpenseExampleNarrativeTextBlock>
<rr:ExpenseNarrativeTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund.&lt;/p&gt;</rr:ExpenseNarrativeTextBlock>
<rr:ObjectivePrimaryTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The Fund seeks to provide long-term growth of income and a high and sustainable level of current income, along with moderate long-term capital appreciation.&lt;/p&gt;</rr:ObjectivePrimaryTextBlock>
<rr:PortfolioTurnoverHeading
contextRef="v_Participant_S000004405">&lt;p&gt;Portfolio Turnover&lt;/p&gt;</rr:PortfolioTurnoverHeading>
<rr:PortfolioTurnoverTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in more taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 33%. &lt;/p&gt;</rr:PortfolioTurnoverTextBlock>
<rr:RiskLoseMoney
contextRef="v_Participant_S000004405">&lt;p&gt;The Fund is subject to the risks associated with the stock and bond markets, any of which could cause an investor to lose money.&lt;/p&gt;</rr:RiskLoseMoney>
<rr:RiskNarrativeTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The Fund is subject to the risks associated with the stock and bond markets, any of which could cause an investor to lose money. However, because bonds usually are less volatile than stocks, and because the Fund invests more than half of its assets in fixed income securities, the Fund's overall level of risk should be low to moderate.&lt;/p&gt;&lt;p&gt;With approximately 60% to 65% of its assets allocated to bonds, the Fund is proportionately subject to bond risks: interest rate risk, which is the chance that bond prices overall will decline because of rising interest rates; income risk, which is the chance that the Fund's income will decline because of falling interest rates; credit risk, which is the chance that a bond issuer will fail to pay interest and principal in a timely manner, or that negative perceptions of the issuer's ability to make such payments will cause the price of that bond to decline; and call risk, which is the chance that during periods of falling interest rates, issuers of callable bonds may call (redeem) securities with higher coupons or interest rates before their maturity dates. The Fund would then lose any price appreciation above the bond's call price and would be forced to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income. For mortgage-backed securities, this risk is known as prepayment risk.&lt;/p&gt;&lt;p&gt;With approximately 35% to 40% of its assets allocated to stocks, the Fund is proportionately subject to stock risks: stock market risk, which is the chance that stock prices overall will decline, and investment style risk, which is the chance that returns from value stocks will trail returns from the overall stock market. Value stocks tend to go through cycles of doing better-or worse-than the stock market in general. These periods have, in the past, lasted for as long as several years.&lt;/p&gt;&lt;p&gt;The Fund is also subject to manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.&lt;/p&gt;&lt;p&gt;An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/p&gt;</rr:RiskNarrativeTextBlock>
<rr:StrategyNarrativeTextBlock
contextRef="v_Participant_S000004405">&lt;p&gt;The Fund invests approximately 60% to 65% of its assets in investment-grade fixed income securities that the advisor believes will generate a reasonable level of current income, including corporate, U.S. Treasury, and government agency bonds, as well as mortgage-backed securities. The remaining 35% to 40% of Fund assets are invested in common stocks of companies that have a history of above-average dividends or expectations of increasing dividends.&lt;/p&gt;</rr:StrategyNarrativeTextBlock >
<rr:RiskNotInsuredDepositoryInstitution
contextRef="v_Participant_S000004405">&lt;p&gt;An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/p&gt;</rr:RiskNotInsuredDepositoryInstitution>
<rr:PerformanceInformationIllustratesVariabilityOfReturns
contextRef="v_Participant_S000004405">&lt;p&gt;The following bar chart and table are intended to help you understand the risks of investing in the Fund.&lt;/p&gt;</rr:PerformanceInformationIllustratesVariabilityOfReturns>
<rr:PerformanceAdditionalMarketIndex
contextRef="v_Participant_S000004405">&lt;p&gt;, which have investment characteristics similar to those of the Fund.&lt;/p&gt;</rr:PerformanceAdditionalMarketIndex>
<rr:PerformanceAvailabilityPhone
contextRef="v_Participant_S000004405">&lt;p&gt;800-662-7447&lt;/p&gt;</rr:PerformanceAvailabilityPhone>
<rr:PerformanceAvailabilityWebSiteAddress
contextRef="v_Participant_S000004405">&lt;p&gt;vanguard.com/performance &lt;/p&gt;</rr:PerformanceAvailabilityWebSiteAddress>
<rr:PerformancePastDoesNotIndicateFuture
contextRef="v_Participant_S000004405">&lt;p&gt;Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.&lt;/p&gt;</rr:PerformancePastDoesNotIndicateFuture>
<rr:BarChartNarrativeTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund's Admiral Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index and a composite bond/stock index. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at800-662-7447.&lt;/p&gt;</rr:BarChartNarrativeTextBlock>
<rr:ExpenseExampleHeading
contextRef="v_Participant2_S000004405">&lt;p&gt;Example&lt;/p&gt;</rr:ExpenseExampleHeading>
<rr:ExpenseExampleNarrativeTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The following example is intended to help you compare the cost of investing in the Fund's Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Shares provide a return of 5% a year and that total annual fund operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/p&gt;</rr:ExpenseExampleNarrativeTextBlock>
<rr:ExpenseNarrativeTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The following table describes the fees and expenses you may pay if you buy and hold Admiral Shares of the Fund.&lt;/p&gt;</rr:ExpenseNarrativeTextBlock>
<rr:ObjectivePrimaryTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The Fund seeks to provide long-term growth of income and a high and sustainable level of current income, along with moderate long-term capital appreciation.&lt;/p&gt;</rr:ObjectivePrimaryTextBlock>
<rr:PortfolioTurnoverHeading
contextRef="v_Participant2_S000004405">&lt;p&gt;Portfolio Turnover&lt;/p&gt;</rr:PortfolioTurnoverHeading>
<rr:PortfolioTurnoverTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in more taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 33%. &lt;/p&gt;</rr:PortfolioTurnoverTextBlock>
<rr:RiskLoseMoney
contextRef="v_Participant2_S000004405">&lt;p&gt;The Fund is subject to the risks associated with the stock and bond markets, any of which could cause an investor to lose money.&lt;/p&gt;</rr:RiskLoseMoney>
<rr:RiskNarrativeTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The Fund is subject to the risks associated with the stock and bond markets, any of which could cause an investor to lose money. However, because bonds usually are less volatile than stocks, and because the Fund invests more than half of its assets in fixed income securities, the Fund's overall level of risk should be low to moderate.&lt;/p&gt;&lt;p&gt;With approximately 60% to 65% of its assets allocated to bonds, the Fund is proportionately subject to bond risks: interest rate risk, which is the chance that bond prices overall will decline because of rising interest rates; income risk, which is the chance that the Fund's income will decline because of falling interest rates; credit risk, which is the chance that a bond issuer will fail to pay interest and principal in a timely manner, or that negative perceptions of the issuer's ability to make such payments will cause the price of that bond to decline; and call risk, which is the chance that during periods of falling interest rates, issuers of callable bonds may call (redeem) securities with higher coupons or interest rates before their maturity dates. The Fund would then lose any price appreciation above the bond's call price and would be forced to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income. For mortgage-backed securities, this risk is known as prepayment risk.&lt;/p&gt;&lt;p&gt;With approximately 35% to 40% of its assets allocated to stocks, the Fund is proportionately subject to stock risks: stock market risk, which is the chance that stock prices overall will decline, and investment style risk, which is the chance that returns from value stocks will trail returns from the overall stock market. Value stocks tend to go through cycles of doing better-or worse-than the stock market in general. These periods have, in the past, lasted for as long as several years.&lt;/p&gt;&lt;p&gt;The Fund is also subject to manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.&lt;/p&gt;&lt;p&gt;An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/p&gt;</rr:RiskNarrativeTextBlock>
<rr:StrategyNarrativeTextBlock
contextRef="v_Participant2_S000004405">&lt;p&gt;The Fund invests approximately 60% to 65% of its assets in investment-grade fixed income securities that the advisor believes will generate a reasonable level of current income, including corporate, U.S. Treasury, and government agency bonds, as well as mortgage-backed securities. The remaining 35% to 40% of Fund assets are invested in common stocks of companies that have a history of above-average dividends or expectations of increasing dividends.&lt;/p&gt;</rr:StrategyNarrativeTextBlock >
<rr:RiskNotInsuredDepositoryInstitution
contextRef="v_Participant2_S000004405">&lt;p&gt;An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/p&gt;</rr:RiskNotInsuredDepositoryInstitution>
<rr:PerformanceInformationIllustratesVariabilityOfReturns
contextRef="v_Participant2_S000004405">&lt;p&gt;The following bar chart and table are intended to help you understand the risks of investing in the Fund.&lt;/p&gt;</rr:PerformanceInformationIllustratesVariabilityOfReturns>
<rr:PerformanceAdditionalMarketIndex
contextRef="v_Participant2_S000004405">&lt;p&gt;, which have investment characteristics similar to those of the Fund.&lt;/p&gt;</rr:PerformanceAdditionalMarketIndex>
<rr:PerformanceAvailabilityPhone
contextRef="v_Participant2_S000004405">&lt;p&gt;800-662-7447&lt;/p&gt;</rr:PerformanceAvailabilityPhone>
<rr:PerformanceAvailabilityWebSiteAddress
contextRef="v_Participant2_S000004405">&lt;p&gt;vanguard.com/performance &lt;/p&gt;</rr:PerformanceAvailabilityWebSiteAddress>
<rr:PerformancePastDoesNotIndicateFuture
contextRef="v_Participant2_S000004405">&lt;p&gt;Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.&lt;/p&gt;</rr:PerformancePastDoesNotIndicateFuture>
<rr:BarChartNarrativeTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund's Investor Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns of the share classes presented compare with those of a relevant market index and a composite bond/stock index. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at800-662-7447.&lt;/p&gt;</rr:BarChartNarrativeTextBlock>
<rr:ExpenseExampleHeading
contextRef="v_Retail_S000004405">&lt;p&gt;Examples&lt;/p&gt;</rr:ExpenseExampleHeading>
<rr:ExpenseExampleNarrativeTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The following examples are intended to help you compare the cost of investing in the Fund's Investor Shares or Admiral Shares with the cost of investing in other mutual funds. They illustrate the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. These examples assume that the Shares provide a return of 5% a year and that total annual fund operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/p&gt;</rr:ExpenseExampleNarrativeTextBlock>
<rr:ExpenseNarrativeTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The following table describes the fees and expenses you may pay if you buy and hold Investor Shares or Admiral Shares of the Fund.&lt;/p&gt;</rr:ExpenseNarrativeTextBlock>
<rr:ObjectivePrimaryTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The Fund seeks to provide long-term growth of income and a high and sustainable level of current income, along with moderate long-term capital appreciation.&lt;/p&gt;</rr:ObjectivePrimaryTextBlock>
<rr:PerformanceTableClosingTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are shown only for the Investor Shares and may differ for each share class. After-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.&lt;/p&gt;</rr:PerformanceTableClosingTextBlock>
<rr:PortfolioTurnoverHeading
contextRef="v_Retail_S000004405">&lt;p&gt;Portfolio Turnover&lt;/p&gt;</rr:PortfolioTurnoverHeading>
<rr:PortfolioTurnoverTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in more taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense examples, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 33%. &lt;/p&gt;</rr:PortfolioTurnoverTextBlock>
<rr:RiskLoseMoney
contextRef="v_Retail_S000004405">&lt;p&gt;The Fund is subject to the risks associated with the stock and bond markets, any of which could cause an investor to lose money.&lt;/p&gt;</rr:RiskLoseMoney>
<rr:RiskNarrativeTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The Fund is subject to the risks associated with the stock and bond markets, any of which could cause an investor to lose money. However, because bonds usually are less volatile than stocks, and because the Fund invests more than half of its assets in fixed income securities, the Fund's overall level of risk should be low to moderate.&lt;/p&gt;&lt;p&gt;With approximately 60% to 65% of its assets allocated to bonds, the Fund is proportionately subject to bond risks: interest rate risk, which is the chance that bond prices overall will decline because of rising interest rates; income risk, which is the chance that the Fund's income will decline because of falling interest rates; credit risk, which is the chance that a bond issuer will fail to pay interest and principal in a timely manner, or that negative perceptions of the issuer's ability to make such payments will cause the price of that bond to decline; and call risk, which is the chance that during periods of falling interest rates, issuers of callable bonds may call (redeem) securities with higher coupons or interest rates before their maturity dates. The Fund would then lose any price appreciation above the bond's call price and would be forced to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund's income. For mortgage-backed securities, this risk is known as prepayment risk.&lt;/p&gt;&lt;p&gt;With approximately 35% to 40% of its assets allocated to stocks, the Fund is proportionately subject to stock risks: stock market risk, which is the chance that stock prices overall will decline, and investment style risk, which is the chance that returns from value stocks will trail returns from the overall stock market. Value stocks tend to go through cycles of doing better-or worse-than the stock market in general. These periods have, in the past, lasted for as long as several years.&lt;/p&gt;&lt;p&gt;The Fund is also subject to manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.&lt;/p&gt;&lt;p&gt;An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/p&gt;</rr:RiskNarrativeTextBlock>
<rr:StrategyNarrativeTextBlock
contextRef="v_Retail_S000004405">&lt;p&gt;The Fund invests approximately 60% to 65% of its assets in investment-grade fixed income securities that the advisor believes will generate a reasonable level of current income, including corporate, U.S. Treasury, and government agency bonds, as well as mortgage-backed securities. The remaining 35% to 40% of Fund assets are invested in common stocks of companies that have a history of above-average dividends or expectations of increasing dividends.&lt;/p&gt;</rr:StrategyNarrativeTextBlock >
<rr:RiskNotInsuredDepositoryInstitution
contextRef="v_Retail_S000004405">&lt;p&gt;An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.&lt;/p&gt;</rr:RiskNotInsuredDepositoryInstitution>
<rr:PerformanceInformationIllustratesVariabilityOfReturns
contextRef="v_Retail_S000004405">&lt;p&gt;The following bar chart and table are intended to help you understand the risks of investing in the Fund.&lt;/p&gt;</rr:PerformanceInformationIllustratesVariabilityOfReturns>
<rr:PerformanceAdditionalMarketIndex
contextRef="v_Retail_S000004405">&lt;p&gt;, which have investment characteristics similar to those of the Fund.&lt;/p&gt;</rr:PerformanceAdditionalMarketIndex>
<rr:PerformanceAvailabilityPhone
contextRef="v_Retail_S000004405">&lt;p&gt;800-662-7447&lt;/p&gt;</rr:PerformanceAvailabilityPhone>
<rr:PerformanceAvailabilityWebSiteAddress
contextRef="v_Retail_S000004405">&lt;p&gt;vanguard.com/performance &lt;/p&gt;</rr:PerformanceAvailabilityWebSiteAddress>
<rr:PerformancePastDoesNotIndicateFuture
contextRef="v_Retail_S000004405">&lt;p&gt;Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. &lt;/p&gt;</rr:PerformancePastDoesNotIndicateFuture>
<rr:PerformanceTableUsesHighestFederalRate
contextRef="v_Retail_S000004405">&lt;p&gt;When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption.&lt;/p&gt;</rr:PerformanceTableUsesHighestFederalRate>
<rr:PerformanceTableNotRelevantToTaxDeferred
contextRef="v_Retail_S000004405">&lt;p&gt;After-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. &lt;/p&gt;</rr:PerformanceTableNotRelevantToTaxDeferred>
<rr:PerformanceTableOneClassOfAfterTaxShown
contextRef="v_Retail_S000004405">&lt;p&gt; Please note that after-tax returns are shown only for the Investor Shares and may differ for each share class. &lt;/p&gt;</rr:PerformanceTableOneClassOfAfterTaxShown>
<rr:PerformanceTableExplanationAfterTaxHigher
contextRef="v_Retail_S000004405">&lt;p&gt;Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.&lt;/p&gt;</rr:PerformanceTableExplanationAfterTaxHigher>
<rr:ShareholderFeesTableTextBlock
contextRef="v_Retail_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:ShareholderFeesTableTextBlock>
<rr:ShareholderFeesTableTextBlock
contextRef="v_Participant2_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405ShareholderFeesParticipant2 column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:ShareholderFeesTableTextBlock>
<rr:ShareholderFeesTableTextBlock
contextRef="v_Participant_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:ShareholderFeesTableTextBlock>
<rr:PerformanceTableTextBlock
contextRef="v_Retail_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact  vanguard_S000004405Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ &lt;/div> </rr:PerformanceTableTextBlock>
<rr:PerformanceTableTextBlock
contextRef="v_Participant2_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405PerformanceTableDataParticipant2 column primary compact * row dei_LegalEntityAxis compact  vanguard_S000004405Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ &lt;/div> </rr:PerformanceTableTextBlock>
<rr:PerformanceTableTextBlock
contextRef="v_Participant_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact  vanguard_S000004405Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ &lt;/div> </rr:PerformanceTableTextBlock>
<rr:AnnualFundOperatingExpensesTableTextBlock
contextRef="v_Retail_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:AnnualFundOperatingExpensesTableTextBlock>
<rr:AnnualFundOperatingExpensesTableTextBlock
contextRef="v_Participant2_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405OperatingExpensesParticipant2 column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:AnnualFundOperatingExpensesTableTextBlock>
<rr:AnnualFundOperatingExpensesTableTextBlock
contextRef="v_Participant_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:AnnualFundOperatingExpensesTableTextBlock>
<rr:ExpenseExampleNoRedemptionTableTextBlock
contextRef="v_Retail_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:ExpenseExampleNoRedemptionTableTextBlock>
<rr:ExpenseExampleNoRedemptionTableTextBlock
contextRef="v_Participant2_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405ExpenseExampleNoRedemptionParticipant2 column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:ExpenseExampleNoRedemptionTableTextBlock>
<rr:ExpenseExampleNoRedemptionTableTextBlock
contextRef="v_Participant_S000004405">&lt;div style="display:none">~ http://vanguard/role/S000004405ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004405Member ~ &lt;/div> </rr:ExpenseExampleNoRedemptionTableTextBlock>
<rr:AnnualReturn2012
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.1006</rr:AnnualReturn2012>
<rr:AnnualReturn2011
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.0963</rr:AnnualReturn2011>
<rr:AnnualReturn2010
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.1065</rr:AnnualReturn2010>
<rr:AnnualReturn2009
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.1602</rr:AnnualReturn2009>
<rr:AnnualReturn2008
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">-0.0984</rr:AnnualReturn2008>
<rr:AnnualReturn2007
contextRef="v_S000004405_C000012161"
unitRef="pure"
decimals="4">0.0561</rr:AnnualReturn2007>
<rr:AnnualReturn2006
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.1128</rr:AnnualReturn2006>
<rr:AnnualReturn2005
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.0348</rr:AnnualReturn2005>
<rr:AnnualReturn2004
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.0757</rr:AnnualReturn2004>
<rr:AnnualReturn2003
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012161">0.0966</rr:AnnualReturn2003>
<rr:AnnualReturnInceptionDate
contextRef="v_S000004405_C000012161">1970-07-01</rr:AnnualReturnInceptionDate>
<rr:BarChartHighestQuarterlyReturn
unitRef="pure"
contextRef="v_S000004405_C000012161"
decimals="4">0.1015</rr:BarChartHighestQuarterlyReturn>
<rr:BarChartLowestQuarterlyReturn
unitRef="pure"
contextRef="v_S000004405_C000012161"
decimals="4">-0.0669</rr:BarChartLowestQuarterlyReturn>
<rr:BarChartHighestQuarterlyReturnDate
contextRef="v_S000004405_C000012161">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
<rr:BarChartLowestQuarterlyReturnDate
contextRef="v_S000004405_C000012161">2009-03-31</rr:BarChartLowestQuarterlyReturnDate>
<rr:BarChartTableTextBlock
contextRef="v_Retail_S000004405">&lt;div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012161Member ~ &lt;/div> </rr:BarChartTableTextBlock>
<rr:BarChartHeading
contextRef="v_Retail_S000004405">Annual Total Returns - Vanguard Wellesley Income Fund Investor Shares</rr:BarChartHeading>
<rr:BarChartClosingTextBlock
contextRef="v_Retail_S000004405">&lt;p>During the periods shown in the bar chart, the highest return for a calendar quarter was 10.15% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -6.69% (quarter ended March 31, 2009 ).&lt;/p></rr:BarChartClosingTextBlock>
<rr:HighestQuarterlyReturnLabel
contextRef="v_Retail_S000004405">(quarter ended September 30, 2009 )</rr:HighestQuarterlyReturnLabel>
<rr:LowestQuarterlyReturnLabel
contextRef="v_Retail_S000004405">(quarter ended March 31, 2009 )</rr:LowestQuarterlyReturnLabel>
<rr:BarChartTableTextBlock
contextRef="v_Participant_S000004405">&lt;div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012161Member ~ &lt;/div> </rr:BarChartTableTextBlock>
<rr:BarChartHeading
contextRef="v_Participant_S000004405">Annual Total Returns - Vanguard Wellesley Income Fund Investor Shares</rr:BarChartHeading>
<rr:BarChartClosingTextBlock
contextRef="v_Participant_S000004405">&lt;p>During the periods shown in the bar chart, the highest return for a calendar quarter was 10.15% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -6.69% (quarter ended March 31, 2009 ).&lt;/p></rr:BarChartClosingTextBlock>
<rr:HighestQuarterlyReturnLabel
contextRef="v_Participant_S000004405">(quarter ended September 30, 2009 )</rr:HighestQuarterlyReturnLabel>
<rr:LowestQuarterlyReturnLabel
contextRef="v_Participant_S000004405">(quarter ended March 31, 2009 )</rr:LowestQuarterlyReturnLabel>
<rr:AverageAnnualReturnInceptionDate
contextRef="v_S000004405_C000012161">1970-07-01</rr:AverageAnnualReturnInceptionDate>
<rr:AverageAnnualReturnYear01
unitRef="pure"
contextRef="v_S000004405_C000012161"
decimals="4">0.1006</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
decimals="4"
contextRef="v_S000004405_C000012161"
unitRef="pure">0.0691</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
decimals="4"
contextRef="v_S000004405_C000012161"
unitRef="pure">0.0719</rr:AverageAnnualReturnYear10>
<vanguard:ComparativeBenchmark
contextRef="v_S000004405_C000012161">Comparative Indexes</vanguard:ComparativeBenchmark>
<rr:AverageAnnualReturnYear01
decimals="4"
contextRef="v_S000004405_C000012161_AfterTaxesOnDistributionsMember"
unitRef="pure">0.0888</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
unitRef="pure"
contextRef="v_S000004405_C000012161_AfterTaxesOnDistributionsMember"
decimals="4">0.0560</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
decimals="4"
contextRef="v_S000004405_C000012161_AfterTaxesOnDistributionsMember"
unitRef="pure">0.0580</rr:AverageAnnualReturnYear10>
<rr:AverageAnnualReturnYear01
unitRef="pure"
contextRef="v_S000004405_C000012161_AfterTaxesOnDistributionsAndSalesMember"
decimals="4">0.0707</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
unitRef="pure"
contextRef="v_S000004405_C000012161_AfterTaxesOnDistributionsAndSalesMember"
decimals="4">0.0528</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
decimals="4"
contextRef="v_S000004405_C000012161_AfterTaxesOnDistributionsAndSalesMember"
unitRef="pure">0.0554</rr:AverageAnnualReturnYear10>
<rr:MaximumCumulativeSalesChargeOverOther
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012161">0.0000</rr:MaximumCumulativeSalesChargeOverOther>
<rr:RedemptionFeeOverRedemption
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012161">0.0000</rr:RedemptionFeeOverRedemption>
<rr:MaximumAccountFee
contextRef="v_S000004405_C000012161"
unitRef ="usd"
decimals="4">20.</rr:MaximumAccountFee>
<rr:MaximumCumulativeSalesChargeOverOfferingPrice
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012161">0</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
<rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther
contextRef="v_S000004405_C000012161"
unitRef ="pure"
decimals="4">0</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
<rr:ExpenseExampleNoRedemptionYear01
contextRef="v_S000004405_C000012161"
unitRef ="usd"
decimals="4">26.</rr:ExpenseExampleNoRedemptionYear01>
<rr:ExpenseExampleNoRedemptionYear03
decimals="4"
unitRef ="usd"
contextRef="v_S000004405_C000012161">80.</rr:ExpenseExampleNoRedemptionYear03>
<rr:ExpenseExampleNoRedemptionYear05
decimals="4"
unitRef ="usd"
contextRef="v_S000004405_C000012161">141.</rr:ExpenseExampleNoRedemptionYear05>
<rr:ExpenseExampleNoRedemptionYear10
contextRef="v_S000004405_C000012161"
unitRef ="usd"
decimals="4">318.</rr:ExpenseExampleNoRedemptionYear10>
<rr:ManagementFeesOverAssets
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012161">0.0022</rr:ManagementFeesOverAssets>
<rr:DistributionAndService12b1FeesOverAssets
contextRef="v_S000004405_C000012161"
unitRef ="pure"
decimals="4">0</rr:DistributionAndService12b1FeesOverAssets>
<rr:OtherExpensesOverAssets
contextRef="v_S000004405_C000012161"
unitRef ="pure"
decimals="4">0.0003</rr:OtherExpensesOverAssets>
<rr:NetExpensesOverAssets
contextRef="v_S000004405_C000012161"
unitRef ="pure"
decimals="4">0.0025</rr:NetExpensesOverAssets>
<rr:AnnualReturn2012
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.1010</rr:AnnualReturn2012>
<rr:AnnualReturn2011
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.0974</rr:AnnualReturn2011>
<rr:AnnualReturn2010
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.1071</rr:AnnualReturn2010>
<rr:AnnualReturn2009
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.1614</rr:AnnualReturn2009>
<rr:AnnualReturn2008
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">-0.0979</rr:AnnualReturn2008>
<rr:AnnualReturn2007
contextRef="v_S000004405_C000012162"
unitRef="pure"
decimals="4">0.0576</rr:AnnualReturn2007>
<rr:AnnualReturn2006
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.1139</rr:AnnualReturn2006>
<rr:AnnualReturn2005
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.0356</rr:AnnualReturn2005>
<rr:AnnualReturn2004
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.0770</rr:AnnualReturn2004>
<rr:AnnualReturn2003
unitRef="pure"
decimals="4"
contextRef="v_S000004405_C000012162">0.0978</rr:AnnualReturn2003>
<rr:AnnualReturnInceptionDate
contextRef="v_S000004405_C000012162">2001-05-14</rr:AnnualReturnInceptionDate>
<rr:BarChartHighestQuarterlyReturn
unitRef="pure"
contextRef="v_S000004405_C000012162"
decimals="4">0.1017</rr:BarChartHighestQuarterlyReturn>
<rr:BarChartLowestQuarterlyReturn
unitRef="pure"
contextRef="v_S000004405_C000012162"
decimals="4">-0.0662</rr:BarChartLowestQuarterlyReturn>
<rr:BarChartHighestQuarterlyReturnDate
contextRef="v_S000004405_C000012162">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
<rr:BarChartLowestQuarterlyReturnDate
contextRef="v_S000004405_C000012162">2009-03-31</rr:BarChartLowestQuarterlyReturnDate>
<rr:BarChartTableTextBlock
contextRef="v_Participant2_S000004405">&lt;div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012162Member ~ &lt;/div> </rr:BarChartTableTextBlock>
<rr:BarChartHeading
contextRef="v_Participant2_S000004405">Annual Total Returns - Vanguard Wellesley Income Fund Admiral Shares</rr:BarChartHeading>
<rr:BarChartClosingTextBlock
contextRef="v_Participant2_S000004405">&lt;p>During the periods shown in the bar chart, the highest return for a calendar quarter was 10.17% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -6.62% (quarter ended March 31, 2009 ).&lt;/p></rr:BarChartClosingTextBlock>
<rr:HighestQuarterlyReturnLabel
contextRef="v_Participant2_S000004405">(quarter ended September 30, 2009 )</rr:HighestQuarterlyReturnLabel>
<rr:LowestQuarterlyReturnLabel
contextRef="v_Participant2_S000004405">(quarter ended March 31, 2009 )</rr:LowestQuarterlyReturnLabel>
<rr:AverageAnnualReturnInceptionDate
contextRef="v_S000004405_C000012162">2001-05-14</rr:AverageAnnualReturnInceptionDate>
<rr:AverageAnnualReturnYear01
unitRef="pure"
contextRef="v_S000004405_C000012162"
decimals="4">0.1010</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
decimals="4"
contextRef="v_S000004405_C000012162"
unitRef="pure">0.0698</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
decimals="4"
contextRef="v_S000004405_C000012162"
unitRef="pure">0.0729</rr:AverageAnnualReturnYear10>
<vanguard:ComparativeBenchmark
contextRef="v_S000004405_C000012162">Comparative Indexes</vanguard:ComparativeBenchmark>
<rr:MaximumCumulativeSalesChargeOverOther
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012162">0.0000</rr:MaximumCumulativeSalesChargeOverOther>
<rr:RedemptionFeeOverRedemption
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012162">0.0000</rr:RedemptionFeeOverRedemption>
<rr:MaximumAccountFee
contextRef="v_S000004405_C000012162"
unitRef ="usd"
decimals="4">20.</rr:MaximumAccountFee>
<rr:MaximumCumulativeSalesChargeOverOfferingPrice
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012162">0</rr:MaximumCumulativeSalesChargeOverOfferingPrice>
<rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther
contextRef="v_S000004405_C000012162"
unitRef ="pure"
decimals="4">0</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
<rr:ExpenseExampleNoRedemptionYear01
contextRef="v_S000004405_C000012162"
unitRef ="usd"
decimals="4">18.</rr:ExpenseExampleNoRedemptionYear01>
<rr:ExpenseExampleNoRedemptionYear03
decimals="4"
unitRef ="usd"
contextRef="v_S000004405_C000012162">58.</rr:ExpenseExampleNoRedemptionYear03>
<rr:ExpenseExampleNoRedemptionYear05
decimals="4"
unitRef ="usd"
contextRef="v_S000004405_C000012162">101.</rr:ExpenseExampleNoRedemptionYear05>
<rr:ExpenseExampleNoRedemptionYear10
contextRef="v_S000004405_C000012162"
unitRef ="usd"
decimals="4">230.</rr:ExpenseExampleNoRedemptionYear10>
<rr:ManagementFeesOverAssets
decimals="4"
unitRef ="pure"
contextRef="v_S000004405_C000012162">0.0016</rr:ManagementFeesOverAssets>
<rr:DistributionAndService12b1FeesOverAssets
contextRef="v_S000004405_C000012162"
unitRef ="pure"
decimals="4">0</rr:DistributionAndService12b1FeesOverAssets>
<rr:OtherExpensesOverAssets
contextRef="v_S000004405_C000012162"
unitRef ="pure"
decimals="4">0.0002</rr:OtherExpensesOverAssets>
<rr:NetExpensesOverAssets
contextRef="v_S000004405_C000012162"
unitRef ="pure"
decimals="4">0.0018</rr:NetExpensesOverAssets>
<rr:AverageAnnualReturnYear01
decimals="4"
unitRef="pure"
contextRef="v_S000004405_C000012161_WellesleyIncomeCompositeIndexMember">0.0988</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
contextRef="v_S000004405_C000012161_WellesleyIncomeCompositeIndexMember"
unitRef="pure"
decimals="4">0.0567</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
contextRef="v_S000004405_C000012161_WellesleyIncomeCompositeIndexMember"
unitRef="pure"
decimals="4">0.0691</rr:AverageAnnualReturnYear10>
<rr:AverageAnnualReturnYear01
decimals="4"
unitRef="pure"
contextRef="v_S000004405_C000012162_WellesleyIncomeCompositeIndexMember">0.0988</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
contextRef="v_S000004405_C000012162_WellesleyIncomeCompositeIndexMember"
unitRef="pure"
decimals="4">0.0567</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
contextRef="v_S000004405_C000012162_WellesleyIncomeCompositeIndexMember"
unitRef="pure"
decimals="4">0.0691</rr:AverageAnnualReturnYear10>
<rr:AverageAnnualReturnYear01
decimals="4"
unitRef="pure"
contextRef="v_S000004405_C000012161_BarclaysUSCreditAorBetterBondIndexMember">0.0821</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
contextRef="v_S000004405_C000012161_BarclaysUSCreditAorBetterBondIndexMember"
unitRef="pure"
decimals="4">0.0676</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
contextRef="v_S000004405_C000012161_BarclaysUSCreditAorBetterBondIndexMember"
unitRef="pure"
decimals="4">0.0555</rr:AverageAnnualReturnYear10>
<rr:AverageAnnualReturnYear01
decimals="4"
unitRef="pure"
contextRef="v_S000004405_C000012162_BarclaysUSCreditAorBetterBondIndexMember">0.0821</rr:AverageAnnualReturnYear01>
<rr:AverageAnnualReturnYear05
contextRef="v_S000004405_C000012162_BarclaysUSCreditAorBetterBondIndexMember"
unitRef="pure"
decimals="4">0.0676</rr:AverageAnnualReturnYear05>
<rr:AverageAnnualReturnYear10
contextRef="v_S000004405_C000012162_BarclaysUSCreditAorBetterBondIndexMember"
unitRef="pure"
decimals="4">0.0555</rr:AverageAnnualReturnYear10>
<xbrli:context
id="v">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_Participant_S000004405">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="dei:DocumentInformationDocumentAxis">vanguard:ParticipantMember</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_Participant2_S000004405">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="dei:DocumentInformationDocumentAxis">vanguard:Participant2Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_Retail_S000004405">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="dei:DocumentInformationDocumentAxis">vanguard:RetailMember</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012161">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012161Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012162">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012162Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012161_AfterTaxesOnDistributionsMember">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:PerformanceMeasureAxis">rr:AfterTaxesOnDistributionsMember</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012161Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012161_AfterTaxesOnDistributionsAndSalesMember">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:PerformanceMeasureAxis">rr:AfterTaxesOnDistributionsAndSalesMember</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012161Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012161_WellesleyIncomeCompositeIndexMember">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:PerformanceMeasureAxis">vanguard:WellesleyIncomeCompositeIndexMember</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012161Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012162_WellesleyIncomeCompositeIndexMember">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:PerformanceMeasureAxis">vanguard:WellesleyIncomeCompositeIndexMember</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012162Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012161_BarclaysUSCreditAorBetterBondIndexMember">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:PerformanceMeasureAxis">vanguard:BarclaysUSCreditAorBetterBondIndexMember</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012161Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:context
id="v_S000004405_C000012162_BarclaysUSCreditAorBetterBondIndexMember">
<xbrli:entity>
<xbrli:identifier
scheme="http://www.sec.gov/CIK">0000105544</xbrli:identifier>
<xbrli:segment>
<xbrldi:explicitMember
dimension="dei:LegalEntityAxis">vanguard:S000004405Member</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:PerformanceMeasureAxis">vanguard:BarclaysUSCreditAorBetterBondIndexMember</xbrldi:explicitMember>
<xbrldi:explicitMember
dimension="rr:ProspectusShareClassAxis">vanguard:C000012162Member</xbrldi:explicitMember></xbrli:segment></xbrli:entity>
<xbrli:period>
<xbrli:startDate>2011-10-01</xbrli:startDate>
<xbrli:endDate>2012-09-30</xbrli:endDate></xbrli:period></xbrli:context>
<xbrli:unit
id="usd">
<xbrli:measure>iso4217:USD</xbrli:measure></xbrli:unit>
<xbrli:unit
id="pure">
<xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit>
<dei:DocumentCreationDate
contextRef="v">2013-01-25</dei:DocumentCreationDate>
<dei:DocumentEffectiveDate
contextRef="v">2013-01-25</dei:DocumentEffectiveDate>
<dei:DocumentPeriodEndDate
contextRef="v">2012-09-30</dei:DocumentPeriodEndDate>
<dei:DocumentType
contextRef="v">485BPOS</dei:DocumentType>
<dei:EntityRegistrantName
contextRef="v">Vanguard Wellesley Income Fund </dei:EntityRegistrantName>
<dei:EntityCentralIndexKey
contextRef="v">0000105544</dei:EntityCentralIndexKey>
<dei:AmendmentFlag
contextRef="v">false</dei:AmendmentFlag>
<rr:RiskReturnDetailTableTextBlock
contextRef="v">&lt;div style="display: none">~ http://xbrl.sec.gov/rr/role/RiskReturnDetailData column period compact * row dei_DocumentInformationDocumentAxis compact * row dei_LegalEntityAxis compact * row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * row primary compact * ~ &lt;/div></rr:RiskReturnDetailTableTextBlock></xbrli:xbrl>
