Family
- father John Cromwell: (1877-1979); had success on the stage and in films; was blacklisted during the McCarthy era; married to Kay Johnson from 1928-1948
- mother Kay Johnson: (1904-1975); married to John Cromwell from 1928-1948; Cromwell directed her in the films "Of Human Bondage" (1934) and "Son of Fury" (1942)
- daughter Kate Cromwell: Born June 5, 1977; mother, Anne Ulvestad
- son John Astrup Cromwell: Born Aug. 29, 1979; mother, Anne Ulvestad
- son Colin James Cromwell: Born April 16, 1981; mother, Anne Ulvestad
Companions
- wife Julie Cobb: born in 1947; second wife; married in 1988; met in acting class in L.A.; has daughter Rosemary Morgan (born in 1983) from first marriage; daughter of actor Lee J Cobb
