William Kegan graduated in 1925 from the New York Military Academy, and four years later from Johns Hopkins University. There, he was a member of the team that won the national lacrosse championships and he subsequently represented the United States in the lacrosse demonstration event at the Amsterdam Olympics in 1928. The following year, Kegan was selected as an All-American. During World War II, he served in Europe as a captain in the US Army. He worked as an insurance agent well into his 70’s, before he died from a heart attack.