Marc Michel Marrier de Lagatinerie was born in
Lausanne, Switzerland on 3 January 1949, the son of
Jacqueline Porel (1918–2012), an actress and granddaughter of
Gabrielle Réjane, and
Gérard Landry, an actor. He had three half siblings, one from an affair his mother had with the singer
Henri Salvador : his brother
Jean-Marie Périer, and two from her marriage to actor
François Périer : his brother Jean-Pierre and sister Anne-Marie. He was married twice, first to French model Bénédicte Lacoste, with whom he had a daughter. They divorced, and he remarried to Italian actress
Barbara Magnolfi. In the early 1970s, he was in a romantic relationship with
Nathalie Delon. ==Death==