Who dated Céline Bonnet?

Céline Bonnet (born 2 February 1976) is a former French backstroke and medley swimmer who competed in the 1992 Summer Olympics. She is married to former French olympic swimmer Xavier Marchand. Their eldest son, Léon Marchand, is a four-time Olympic gold medalist.

Xavier Marchand (born 4 August 1973 in Deauville) is a former French medley swimmer, who competed in the 1996 and 2000 Summer Olympics. He won the silver medal in the men's 200 metres individual medley event at the 1998 World Aquatics Championships in Perth, Australia.