Namesakes
Austin Clapp
(m) 1910-1971 
Olympic Medalists 1928; 1932 swimming - 4x200 m freestyle relay; water polo (gold/bronze)
Gordon Clapp
(m) 1948-
Notable Actors and Entertainers (actor)
Johnny Knoxville
(a.k.a. Clapp) (m) 1971-
Notable Actors and Entertainers (actor)