FIRST COMMONWEALTH FINANCIAL CORPORATION Exhibit 21.1 - SUBSIDIARIES OF FIRST COMMONWEALTH FINANCIAL CORPORATION Percent Ownership By Registrant First Commonwealth Bank 100% 22 North Sixth Street Indiana, PA 15701 Reliable Financial Corporation 100% 428 Station Street Bridgeville, PA 15017 Unitas Mortgage Corporation 100% 17 East High Street Carlisle, PA 17013 Unitas Financial Corporation 100% PO Box 777 Chambersburg, PA 17201 Commonwealth Systems Corporation 100% 22 North Sixth Street Indiana, PA 15701 Incorporated under the laws of Pennsylvania First Commonwealth Trust Company 100% 614 Philadelphia Street Indiana, PA 15701 Incorporated under the laws of Pennsylvania BSI Financial Services Inc. 100% 101 North Second Street Titusville, PA 16354 Commonwealth Trust Credit Life Insurance Company 50% 100 West Clarendon, Suite 800 Phoenix, AZ 85013