Brenna O'Brien: Brenna O'Brien. Actress: Supernatural. Brenna O'Brien was born on 9 March 1991 in Brampton, Ontario, Canada. She is an actress, known for Supernatural (2005), X-Men: The Last Stand (2006) and Charlie St. Cloud (2010).
Known For: Supernatural (Cecily), X-Men: The Last Stand (Minivan Daughter), Charlie St. Cloud (Girl in Toy Store), Iron Man: Armored Adventures (Rhona ErwinMad Thinker(voice))