Of Irish, English, and Scottish descent, Maureen Paula O'Sullivan was born on May 17, 1911 in Boyle, County Roscommon, Ireland. Her father was Charles Joseph O'Sullivan, an officer in the Connaught Rangers, and his wife, the former Mary Fraser (or Frazer). She was educated at Catholic schools in Dublin, Paris, and London (Convent of the Sacred Heart, Roehampton, where a fellow student was fellow future actress Vivien Leigh). Even as a schoolgirl, Maureen desired an acting career, despite her father's initial opposition. She studied hard and read widely. When the opportunity to be an actress came along, it almost dropped in her lap.