Saoirse Úna Ronan (/ˈsɜrʃə ˈuːnə ˈroʊnən/ SUR-shə; born 12 April 1994) is an Irish actress. She came to international prominence in 2007 after co-starring as Briony Tallis in the film Atonement with James McAvoy and Keira Knightley, for which she received nominations for a BAFTA, a Golden Globe, and an Academy Award, making her one of the youngest actresses to receive an Oscar nomination.