Keir O'Donnell: Keir O'Donnell. Actor: Wedding Crashers. O'Donnell was born in Sydney, Australia but moved to Harvard, Massachusetts, United States when he was 10 years old. His name is of Gaelic origin and translates to "Little Dark One" (It is pronounced to rhyme with "beer"). He is best known for playing a wide variety of eccentric characters through all genres of film and television.
