From February 1953 until the beginning of 1955, Hugo Claus lived in Italy where his girlfriend (born in 1928) acted in a few films. They were married on 26 May 1955, and had a son, Thomas, on 7 October 1963. In the early 1970s, he had an affair with actress Sylvia Kristel, who was 23 years younger, with whom he had a son, Arthur, in 1975. They lived in the Raamgracht 5–7 building in Amsterdam. The relationship ended in 1977, when she left him for actor Ian McShane.