Was a member of Phi Gamma Delta fraternity at Northwestern University.
Sister Moira works in the Philadelphia DA's office as an assistant district attorney.
First child born, with Catherine Keener, a son named Clyde. [June 1999]
Mulroney's younger brother Kieran Mulroney is also an actor. The brothers starred together in the John Hughes comedy, Career Opportunities (1991) with Jennifer Connelly and Frank Whaley.
Mulroney and his older brother Dan are co-owners of 'The Double Door', one of Chicago's more popular music clubs.
Mulroney has been married to actress Catherine Keener since 1990. They met in 1987 when filming Survival Quest (1989).
Plays cello in the song "Place Your Hand" from Melissa Etheridge's 1992 Album "Never Enough".
Good friends with Brad Pitt.
Born on the same day as actor/comedian Rob Schneider.
Plays double bass and cello on the debut EP of Rain and Summer Phoenix's band, Papercranes.
Lives in Los Angeles.
Dermot Mulroney Detailed Biography
An actor whose versatility is matched by the unpredictability of many of his career choices, Dermot Mulroney has been appearing in films since the early 1990s. Born in Alexandria, Virginia, on October 31, 1963, Mulroney developed an early interest in acting. After graduating from Northwestern University in 1985, he began acting in a number of made-for-TV movies, playing young men caught up in problematic teen romances in both Sin of Innocence (1986) and Daddy (1987). In 1988 he made his film debut in the Brat Pack western Young Guns, portraying one of the titular group of Old West gunslingers.
Despite the success of Young Guns, Mulroney remained a relative unknown, appearing in a number of forgettable films. One exception was Longtime Companion (1990), a seminal AIDS drama that cast him as a young man who becomes one of the virus' earliest casualties. The actor continued to pop up in films of widely varying subject matter, to say nothing of quality, starring in everything from teen comedies (Career Opportunities, 1991) to westerns (Bad Girls, 1994) to thrillers (Copy Cat, 1995) to chick flicks (How to Make an American Quilt, 1995). He also enjoyed a collaboration with director Tom Di Cillo, starring (and in the first case, associate producing) Di Cillo's Living in Oblivion (1995) and Box of Moonlight (1996). In 1997, Mulroney had one of his most high-profile roles to date as Julia Roberts' titular best friend in My Best Friend's Wedding, a successful black comedy that also starred Cameron Diaz and Rupert Everett.
Mulroney has also benefited from his collaborations with Di Cillo for more personal reasons: for some years he has been married to Catherine Keener, an actress often cited as the director's muse.
