He had 3 sons with his first wife, Charmian: Nicholas Grant (born July 23, 1960); Christopher Dean (born March 24, 1963); and Farley Paul (born April 21, 1966). He also had a son,
Michael Biggs (born August 16, 1974) with Raimunda de Castro. She eventually became his second wife (then as Raimunda Rothen) in 2002. His eldest son, Nicholas died in a car crash in Melbourne (Australia) on January 5, 1971.