From Wikipedia the free encyclopedia John Gavin April 8 1931 February 9 2018 was an American actor who was the United States Ambassador to Mexico 198186 and the president of the Screen Actors Guild 197173 He was best known for his performances in the films Imitation of Life 1959 Spartacus 1960 Psycho 1960 and Thoroughly Modern Millie 1967 playing leading roles in a series of films for producer Ross Hunter Born Juan Vincent Apablasa Jr Gavin was of Mexican Chilean and Spanish descent and was fluent in Spanish His father Juan Vincent Apablasa Sr was of Chilean origin and his paternal ancestors including Cayetano Apablasa were early landowners in California under Spanish rule Gavins mother was Delia Diana Pablos Gavins parents divorced when he was about two years old Gavins mother married Herald Ray Golenor who adopted Gavin and changed his name to John Anthony Golenor