Formerly married to actress Colleen Fitzpatrick from 1973–1987, they have one daughter, actress Katharine Cullen born 9 June 1975.
Katharine Hepburn | Bill Cullen | Katharine McPhee | Katharine Cornell | William Cullen Bryant | William Cullen Bryant High School | Will Cullen Hart | Max Cullen | Katharine Ross | Katharine O'Shea | Katharine Graham | Hugh Roy Cullen | William Cullen, Baron Cullen of Whitekirk | Peter Cullen | Michael Cullen | Martin Cullen | Katharine Sergeant Angell White | Katharine, Duchess of Kent | Cullen | William Cullen | Thomas H. Cullen | Paul Cullen, Lord Pentland | Lake Katharine State Nature Preserve | Katharine Tynan | Katharine Russell, Viscountess Amberley | Katharine Lee Bates | Katharine Hamnett | Katharine Elizabeth Dopp | Katharine Drexel | Cullen Harper |
The mini-series Hills End starred Madge Ryan, John Noble, Maree D'Arcy, Katharine Cullen, Clayton Williamson, Jason Degiorgio, Emma Fowler, Haydon Samuels and Caitlin Procter.