Margaret O'Brien signed magazine page. 8x10 inches Margaret O'Brien (born Maxine O'Brien and also known as Angela Maxine O'Brien; January 15, 1937) is an American film, radio, television, and stage actress, and is one of the last surviving stars from the Golden Age of Hollywood cinema. Beginning a prolific career as a child actress in feature films for Metro-Goldwyn-Mayer at age 4, O'Brien became one of the most popular child stars in cinema history and was honored with a Juvenile Academy Award as the outstanding child actress of 1944. In her later career, she appeared on television, on stage, and in supporting film roles.