Joan Allen. Actress: Room. Joan Allen was born on August 20, 1956 in Rochelle, Illinois, the youngest of four children. She is the daughter of homemaker Dorothea Marie (Wirth) and gas station owner James Jefferson Allen. Her mother's family was German, and her father had English, Scots-Irish, and German ancestry. She attended Rochelle Township High School where she was voted most likely to succeed. Joining Chicago's famed Steppenwolf Theatre Company...