AUTHORIZATION TO FILE SECTION 16 REPORTS

I hereby authorize and designate Ronald A. Miller, Sonia M. Dumbleton
or Michael D. Grover to execute and file or cause to be filed, on my
behalf any Forms 3, 4 and 5, including any amendments thereto, that I
may voluntarily or be required to file with the U.S. Securities and
Exchange Commission as a result of my ownership of, or transactions in,
securities of Financial Institutions, Inc.  This authority shall
continue until I am no longer required to file such forms, or until
sooner revoked by me in writing.

In witness whereof, I have executed this authorization this 7th day of
February, 2006.

						      Bruce H. Nagle
						-------------------------------
						      Bruce H. Nagle
						    Senior Vice President
						      Five Star Bank


M.D. Grover
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Witness