John William Clark was born on November 10, 1931 in Mt. Kisco, NY to parents Merrill "Bud" Irwin and Elsie June Greene Clark. As per the 1940 U.S. Census, the Clark family lived in Bedford, NY. He served in the U.S. military (branch unknown) during the Korean War. No further information on his service is available.
He married Barbara Ann Mead on February 26, 1954 (place unknown); they had four sons. No further information on his post-war life is available. He died on February 20, 1988 in West Palm Beach, FL.
U.S. Social Security Applications and Claims Index, 1936-2007. U.S. Social Security Death Index, 1935-2014.