His mother was a silent film actor, and his father was a World War I veteran and Hollywood business manager (whose clients included Douglas Fairbanks)
While struggling to begin a career as an actor, he held a number of odd jobs, including digging ditches and doing a stint with an import-export company in Mexico
The original choice to play Darrin Stephens on Bewitched, he ultimately took over the role in 1969 when Dick York was forced to leave the sitcom for health reasons
To explain his unmarried status early in his career, he claimed to be a divorcé in studio biographies, but eventually went public as a gay man on National Coming Out Day in 1991
In 1992, he shared Grand Marshal duties with friend and former Bewitched costar Elizabeth Montgomery for a gay-pride parade in Los Angeles
Charitable pursuits included the Special Olympics and the American Foundation for AIDS Research
Diagnosed with prostate cancer in 1989, to which he succumbed on July 8, 1994