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He attended Stanford.
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He attended the San Rafael Military Academy and the Menlo School in California.
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His mother was a silent movie actress.
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He has made 215 television appearances.
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His last television series appearance was in "Harry and the Hendersons" as Earl Powers.
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He and Elizabeth Montgomery died within one year of each other.
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He and Elizabeth Montgomery were Grand Marshals at the Los Angeles Gay Pride day.
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He had been offered the role of Darrin Stephens in 1964 but was under contract to Universal Studios and unable to accept it.
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He has made over 100 movie and television appearances.
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The only shows that he was on that made it more than a season were the shows he replaced lead actors in.
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One Happy Family was his first personal show.
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His last personal series was Down to Earth.
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The last movie he was in was Twenty Dollar Star as Mr. Brandon.
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His last televison appearance was in the 1993 series Acting on Impulse as Mr. Randolph.
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His first television appearance was in "Medic" as Clyde.
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His first movie appearance was in the 1955 The Beast with a Million Eyes as Deputy Larry Brewster.
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He has replaced a lead actor's role twice, once in Bewitched and again in Down to Earth.
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He was a homosexual.
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His father, Elmer Cox, was a World War I hero and a Hollywood business manager. His mother, Ruth McNaughton, was a film actress.
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He was never married, but had a long-time companion whom he was with for 20 years before the man's death from a cerebral hemorrhage in 1979. He had "manufactured" a wife to the press in the early productive days, to protect his career.
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His grandfather, John McNaughton, founded Los Angeles's Union Stockyards.
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Lived in Mexico and ran an import/export business in his early years. His love for Mexican art and culture stayed with him for the rest of his life.