Clay O'BrienActingMay 6, 1961 (64 years old)Ray, Arizona, USAPopularity: 0IMDbKnown For7.9GemLittle House on the PrairieHenry Henderson6.5Marcus Welby, M.D.Peter Graham6.7GunsmokeTuttle Kincaid6.7GunsmokeCaleb Cunningham7.1The CowboysCowboy Hardy Fimps6.1Cahill: United States MarshalBilly Joe Cahill6.6The Apple Dumpling GangBobby Bradley6.3One Little IndianMarkHog WildSterling Melborne5.6Mackintosh and T.J.T.J.Climb an Angry MountainMichael Cooper6.0The Whiz Kid and the Carnival CaperFilmographyMovies10TV Shows4AllCast10CrewBrowse All1970s6.0The Whiz Kid and the Carnival Caper6.6The Apple Dumpling GangBobby Bradley5.6Mackintosh and T.J.T.J.Hog WildSterling Melborne6.1Cahill: United States MarshalBilly Joe Cahill6.3One Little IndianMark7.1The CowboysCowboy Hardy FimpsClimb an Angry MountainMichael Cooper
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