Saoirse Una Ronan is an Irish and American actress. Primarily noted for her roles in period dramas since adolescence, Ronan has received various accolades, including a Golden Globe Award and nominations for four Academy Awards and five British Academy Film Awards.Ronan made her acting debut in 2003 on the Irish medical drama series The Clinic and had her breakthrough in the role of a precocious teenager in Atonement, which earned her a nomination for the Academy Award for Best Supporting Actress. She followed this with starring roles of a murdered girl seeking closure in The Lovely Bones and a teenage assassin in Hanna, and the supporting role of a baker in The Grand Budapest Hotel. She garnered critical acclaim for playing a homesick Irish immigrant in 1950s New York in Brooklyn, the eponymous high school senior in Greta Gerwig's Lady Bird, and Jo March in Gerwig's Little Women. Ronan was nominated for the Academy Award for Best Actress for all three performances, and won a Golden Globe Award for Best Actress for Lady Bird.