Laurence Haddon passed away May 10 in Santa Monica, Calif., due to complications from Lewy body disease, a form of dementia.
Haddon got his start in entertainment as a stage and live TV actor in the late 1950s after serving as a Merchant Marine in WWII. He shared the Broadway stage with Larry Hagman and Julie Harris in 1959's The Warm Peninsula.
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Haddon's role on Mary Hartman, Mary Hartman was one of TV's first gay characters. On the show, Ed lived with his boyfriend Howard (Beeson Carroll) — and in one scene from a 1976 episode of the nighttime soap parody, the two men kiss.
Haddon also held recurring roles on Dallas as J.R.'s banker Franklin Horner, on Knots Landing playing the corrupt Dr. Mitch Ackerman and on Lou Grant as the foreign editor. His professional TV resume stretched more than three decades. Haddon's last credit was the 1996 Matthew Broderick film Infinity.
Haddon is survived by his wife Jacqueline, his children Michael and Phoebe, daughter-in-law Eilene Vila Schmidt, stepson Guy, and grandchildren Zoe and Stephen.