Maire O'Neill was born on January 12, 1885 in Dublin, Ireland as Molly Allgood. She was an actress, known for Juno and the Paycock (1930), Scrooge (1951) and St. Martin's Lane (1938). She was married to Arthur Sinclair and G.H. Mair. She died on November 2, 1952 in Belfast, Northern Ireland.