Child of playwright and Pulitzer Reward receiver Eugene O’Neill and wife of Hollywood film great Charlie Chaplin. While learning performing, she became close friends with Gloria Vanderbilt. Her popular father was therefore annoyed over her engagement to Charlie Chaplin that he cut her out of his will. Her granddaughter, also called Oona, starred around the HBO series Video game of Thrones. In her youngsters, she dated Catcher in the Rye writer J.D. Salinger.