- October 31, 1963 (age 56)
- Actor, Musician, Film Director, Cellist
- Catherine Keener
- Ellen Mulroney, Michael Mulroney
Dermot Mulroney(born October 31, 1963) is an American actor and director. Acting since the 1980s, he is known for his roles in the films Young Guns, Where the Day Takes You, My Best Friend's Wedding, The Last Outlaw, About Schmidt, and August: Osage County. Mulroney played Francis Gibson, the main antagonist of NBC's Crisis.
Mulroney was born in Alexandria, Virginia. His mother, Ellen, was a housewife and amateur actress originally from Manchester, Iowa, and his father, Michael Mulroney, was a law professor (and amateur racecar driver) at Villanova University School of Law, originally from Elkader, Iowa. He has a sister, Moira, and three brothers, Conor, Kieran (who is also an actor), and Sean. Moira formerly worked in the Philadelphia DA's office as an assistant district attorney and later at WXPN, an FM radio station in Philadelphia, but now works elsewhere in the non-profit industry. Some of Mulroney's ancestors immigrated from County Donegal and County Mayo in Ireland during the Irish Potato Famine; he is of mostly Irish descent, with more distant Germanancestry. Mulroney attended Maury Elementary School and played cello in school and city youth orchestras, as well as acting in children's community theater. Mulroney attended the Interlochen Arts Camp as a cellist. He later attended T. C. Williams High School (grad. 1981) as well as Northwestern University (grad. 1985) in Evanston, Illinois, where he was a member of the fraternity of Phi Gamma Delta.
Most of his lead performances have been in romantic comedy films. Mulroney has appeared in many movies, including as the male lead in My Best Friend's Wedding alongside Julia Roberts and Cameron Diaz. He is probably best known for his western roles as either an outlaw or gunman. Mulroney co-starred in the 1988 western Young Guns, for which he is possibly best known, in which he played "Dirty Steve" alongside Emilio Estevez. In 1993 Mulroney played "J.P", the boyfriend of star "Maggie" (played by Bridget Fonda) in Point of No Return. In 1994 he starred with Mickey Rourke in The Last Outlaw, which has since become a cult classic among western genre fans. Mulroney also played the love interest of Madeleine Stowe in the western Bad Girls. He first gained critical acclaim in the film Longtime Companion, portraying a young man with HIV during the early days of the outbreak of the virus, who becomes the first of his group of friends to succumb to the disease. In 2005, he played a "date-for-hire" character alongside Debra Messing in The Wedding Date, and co-starred in the ensemble film The Family Stone, with Sarah Jessica Parker. He was also in the movie Abduction (2011) as Martin Price.
Mulroney married actress Catherine Keener in 1990 after they met in 1987 when filming Survival Quest. The couple separated in May 2005 and filed for divorce June 11, 2007, citing irreconcilable differences. The divorce was final on December 19, 2007. They have a son named Clyde Keener Mulroney (born June 21, 1999).
Mulroney is an accomplished cellist, and in 2005 appeared alongside Boyd Tinsley for Alanis Morissette's show at the House of Blues in Hollywood. He played cello in the song "Place Your Hand" from Melissa Etheridge's 1992 album Never Enough, on the EP for Rain Phoenix's band Papercranes, and on the score to Mission: Impossible III (2006), Mission: Impossible – Ghost Protocol, and Star Trek Into Darkness (2013).