Mara Rooney is an American actress best known for her role as Mary in the classic film 'National Velvet' alongside Elizabeth Taylor. She is the daughter of actors Mickey Rooney and Jan Rooney and the granddaughter of vaudeville entertainer Joe Yule Sr. She has appeared in numerous films and television shows, including 'The Social Network, ' 'The Girl with the Dragon Tattoo, ' and 'The Martian.'