Tags: Tennis Player.
Gregory S. Mangin (November 1 1907 – October 1979) was an American former tennis player.Mangin was educated at the Georgetown University and learnt lawn tennis in Montclair New Jersey.In 1931 Mangin partnering with compatriot Berkeley Bell were runners-up in the doubles final of the U.S. National Championships played in Brookline MA losing in straight sets to compatriots John Van Ryn and Wilmer Allison.He won the singles title at the U.S.