Don Chastain (September 2, 1935 – August 9, 2002) was an American actor, singer and screenwriter. He was married to Jill Diamond and had one son, Colin Chastain.He worked in television in Los Angeles and New York and toured the United States and Canada with major productions. Leading ladies included Katharine Hepburn; Lauren Bacall; Barbara Stanwick The Big Valley, Episode: Hunter's Moon, S04, E12 (First Aired: Dec.