Exhibit 21.1

SUBSIDIARIES OF TOWER GROUP, INC.

	Jurisdiction of		Percentage
Name	Incorporation	Parent	Ownership
Tower Insurance Company of New York (“TICNY”)	New York	Tower Group, Inc. (“TGI”)		100	%
Tower Risk Management Corp.	New York	TGI		100	%
Tower National Insurance Company	Massachusetts	TGI		100	%
Preserver Group, Inc. (“PGI”)	New Jersey	TGI		100	%
Preserver Insurance Company	New Jersey	PGI		85	%
		TICNY		15	%
Mountain Valley Indemnity Company	New Hampshire	PGI		100	%
North East Insurance Company (“NEIC”)	Maine	TICNY		100	%
North Atlantic Underwriters, Inc.	Maine	NEIC		100	%
Ocean II Corporation	Delaware	TGI		100	%
Ocean I Corporation	Delaware	Ocean II Corp.		100	%
CastlePoint Bermuda Holdings, Ltd. (“CPBH”)	Bermuda	Ocean I Corp.		100	%
CastlePoint Reinsurance Company, Ltd. (“CastlePoint Re”)	Bermuda	CPBH		100	%
CastlePoint Management Corp. (“CPM”)	Delaware	Ocean I Corp.		100	%
CastlePoint Risk Management of Florida, Corp. (f/k/a AequiCap CP Services Group, Inc.)	Florida	CPM		100	%
CastlePoint Insurance Company (“CPIC”)	New York	CastlePoint Re		50	%
		CPM		50	%
10271 Tower Realty Group, LLC (“10271 Tower”)	Delaware	CPIC		100	%
10272 Tower Realty Group, LLC (“10272 Tower”)	Delaware	10271 Tower		100	%
10273 Tower Realty Group, LLC (“10273 Tower”)	Delaware	10272 Tower		100	%
CastlePoint Florida Insurance Company	Florida	CPIC		100	%
HIG, Inc.	Delaware	CastlePoint Re		100	%
Hermitage Insurance Company (“HIC”)	New York	HIG, Inc.		100	%
Kodiak Insurance Company	New Jersey	HIC		100	%
American Resources Insurance Consultants, LLC	Alabama	HIG, Inc.		100	%

Specialty Underwriters Alliance, Inc. (“SUA”)	Delaware	TGI	100	%
CastlePoint National Insurance Company (f/k/a SUA Insurance Company)	Illinois	SUA	100	%
SUA Insurance Services, Inc.	Delaware	SUA	100	%
Hermitage Holdings, Inc.	Connecticut	HIG, Inc.	100	%
Adirondack AIF, LLC (“AAIF”)	New York	TGI	100	%
Adirondack Insurance Exchange (“AIE”)	New York	(1)
Massachusetts Homeland Insurance Company	Massachusetts	TICNY	100	%
York Insurance Company of Maine	Maine	CastlePoint National Ins. Co.	100	%
New Jersey Skylands Management, LLC (“NJSM”)	Delaware	TGI	100	%
New Jersey Skylands Insurance Association (“NJSIA”)	New Jersey	(2)
New Jersey Skylands Insurance Company	New Jersey	NJSIA	100	%

(1) AIE is a New York reciprocal insurer and is managed by AAIF, an attorney-in-fact.

(2) NJSIA is a New Jersey reciprocal insurer and is managed by NJSM, an attorney-in-fact.