Patricia Quinn, Lady Stephens is a Northern Irish actress and singer best known for her role as Magenta in the film The Rocky Horror Picture Show , and the original stage play from which it was adapted.
Quinn was born in Belfast to Rebecca and James Connolly Quinn, a bookmaker. She has a son, Quinn Hawkins, from her first marriage to Don Hawkins. Her nephews, Jonny Quinn and Bradley Quinn, are both members of the alternative rock band Snow Patrol.
Source: Wikipedia