[1] Mulroy served as a bomber pilot in the United States Air Force for three years during World War II,[2] and was married September 15, 1945 to the former Virginia Spaulding.
[5][6] The board of supervisors appointed then-chairman Mulroy as the first county executive to serve a one-year term before the office was to become elective.
[16] In his retirement, he served on the boards of several not-for-profit organizations, notably the Onondaga Historical Association, to which he donated a quarter of a million dollars.
Mulroy was stricken while on a Syracuse Newspapers-sponsored fishing trip in the Thousand Islands and was taken to Kingston General Hospital.
His son, former judge J. Kevin Mulroy, was removed from the bench in August 2000 for judicial misconduct.