Margaret Julia “Marlo” Thomas is an American actress, producer, and social activist known for her starring role on the TV series That Girl . She also serves as National Outreach Director for St. Jude Children's Research Hospital. She is currently appearing in the Broadway production of "Relatively Speaking" in a one-act play by Elaine May called "George Is Dead." Thomas was born in Detroit, Michigan, the eldest child of Lebanese-American comedian Danny Thomas and his wife, the former Rose Marie Cassaniti . On her mother's side, she is also the granddaughter of drummer and... percussionist, Marie "Mary" Cassaniti . Her brother, Tony Thomas, is a television and film producer, and her sister, Terre Thomas, is a former actress. Marlo Thomas was raised in Beverly Hills, California. Her parents called her Margo as a child, though she soon became known as Marlo, she told The New York Times, because of her childhood mispronunciation of the nickname. She attended Marymount High School in Los Angeles.
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