1 Answer

In a BBC Radio interview in January 2007, O'Toole said that he had studied women for a very long time, had given it his best try, but knew "nothing." In 1959, he married Welsh actress Siân Phillips, with whom he had two daughters: award-winning actress Kate (b. 1960) and Patricia. Peter and Sîan were divorced in 1979. Phillips later revealed in two autobiographies that O'Toole had subjected her to mental cruelty — largely fuelled by drinking — and was subject to bouts of extreme jealousy when she finally left him for a younger lover.[15]
O'Toole and his girlfriend, model Karen Brown, had a son, Lorcan Patrick O'Toole (born 14 March 1983, when O'Toole was fifty years old). Lorcan, now an actor, was a pupil at Harrow School, boarding at West Acre from 1996.

From Wikipedia