EXHIBIT 21 LIST OF SUBSIDIARIES OF THE REGISTRANT Maguire Insurance Agency, Inc., a Pennsylvania corporation PCHC Investment Corp., a Delaware corporation Philadelphia Indemnity Insurance Company, a Pennsylvania corporation Philadelphia Insurance Company, a Pennsylvania corporation Liberty American Insurance Group, Inc., a Delaware corporation Mobile USA Insurance Company, a Florida corporation Liberty American Insurance Company, a Florida corporation Mobile Homeowners Insurance Agencies, Inc., a Florida corporation Liberty American Premium Finance Company, a Florida corporation