[Code of Federal Regulations] [Title 5, Volume 3] [Revised as of January 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 5CFR1651.5] [Page 276] TITLE 5--ADMINISTRATIVE PERSONNEL CHAPTER VI--FEDERAL RETIREMENT THRIFT INVESTMENT BOARD PART 1651--DEATH BENEFITS--Table of Contents Sec. 1651.5 Widow or widower. For purposes of payment under Sec. 1651.2(a)(2), the widow or widower of the participant is the person to whom the participant is married on the date of death. A person is considered to be married even if the parties are separated, unless a court decree of divorce or annulment has been entered. State law of the participant's domicile will be used to determine whether the participant was married at the time of death.