The news of his death was announced on Saturday afternoon by his sister Lauren Chapin on Facebook.
“It is with a saddened heart that I say goodbye to my precious brother Billy Chapin, wonderful star of movies, television and radio,” wrote Lauren. “He passed away last night after a long illness but now is in the arms of his Savior. Billy was a wonderful brother to both Michael and me…He will be greatly missed.”
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Born on Dec. 28, 1943, in Los Angeles, Chapin first appeared in uncredited roles in films like “Casanova Brown” and “The Cockeyed Miracle.” He then made his Broadway debut in “Three Wishes for Jamie.”