Daughter of Hal Roach, creator of "Our Gang" series; owner of Hal Roach Studios. She was married to actor Robert Livingston [real name, Robert Randall]. Margaret was mother to Addison Randall.

Margaret Roach was born on March 21, 1921 in Los Angeles, California. Her father was comedy producer Hal Roach. When she was a teenager Margaret worked on in the theatre and sang at nightclubs. She changed her name to Diane Rochelle and began getting small roles in films. Her father didn't want her to be an actress and initially refused to help her. However in 1940 he cast her in his comedies including Turnabout and Road Show. Margaret's first marriage, to E.L. Hilton, ended in divorce. Following her mother's death in 1941 she became estranged from her father. She married actor and writer Robert Livingston in 1947 and they had a son named Addison. Although she made more than a dozen films Margaret never became a leading lady. She retired after appearing in the 1949 crime drama The Devil's Sleep. Her marriage to Robert ended after four years. On November 25, 1964 Margaret passed away at the age of 43. She was buried near her mother at Holy Cross cemetery in Los Angeles. Margaret's son Addison Randall also became an actor.