Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Name	Jurisdiction
Allied World Assurance Company Holdings, Ltd		Bermuda
Allied World Assurance Company, Ltd		Bermuda
Allied World Assurance Holdings (Ireland) Ltd		Bermuda
Allied World Assurance Company (Reinsurance) Limited		Ireland
Allied World Assurance Company (Europe) Limited		Ireland
Allied World Assurance Holdings (U.S.) Inc.		Delaware
Allied World Assurance Company (U.S.) Inc.		Delaware
Allied World National Assurance Company		New Hampshire
Allied World Investment Company		Delaware
Allied World Reinsurance Company		New Hampshire
Darwin Professional Underwriters, Inc.		Delaware
Darwin National Assurance Company		Delaware
Darwin Select Insurance Company		Arkansas
Vantapro Specialty Insurance Company		Arkansas
Allied World Europe Holdings, Ltd		Bermuda
2232 Services Limited		United Kingdom
Allied World Capital (Europe) Limited		United Kingdom
Allied World Assurance Company, AG		Switzerland
AWAC Services Company		Delaware
AWAC Services Company (Bermuda), Ltd		Bermuda
AWAC Services Company (Ireland) Limited		Ireland
Ocean Holdings (U.S.) Inc.		Delaware
GO Sub, LLC		Delaware