Dermot Mulroney has been a familiar face in movies and TV for close to forty years, and he’s back in search results because of a career move and a finished divorce. This article lays out verified facts about his life, work, and family, and it clearly separates what’s confirmed from what isn’t.
Background
Dermot Mulroney is an American actor and musician who first became widely known for playing Michael O’Neal opposite Julia Roberts in the 1997 romantic comedy My Best Friend’s Wedding. He built a long career playing a mix of leading and supporting roles across comedies, dramas, and thrillers, and more recently he’s been a regular face on network television.
People are searching for him right now for two main reasons. He plays Chief Dom Pascal on NBC’s Chicago Fire, and news broke in mid-2026 that his character is being written off the show earlier than expected in its current season. On top of that, his divorce from musician Prima Apollinaare, which he filed for in 2025, has kept his personal life in the news alongside his TV work.
Latest Update
As of September 16, 2026, here is what is currently known.
Confirmed development: Deadline reported that Dermot Mulroney will exit NBC’s Chicago Fire early in Season 15, wrapping up his run as Chief Dom Pascal ahead of schedule. He joined the show as a series regular in Season 13, taking over the firehouse leadership role after a previous cast member’s exit.
No official reason for the early exit has been released by NBC or Wolf Entertainment, so any specific explanation you see online beyond a scheduling and story decision should be treated as unconfirmed. Separately, Mulroney has also been working on the Netflix series The Hunting Wives, and as of earlier this year a writers’ room had started work on a possible third season, though nothing about a season three has been officially greenlit as of this writing.
Full Profile
Family and Early Life
Dermot Patrick Mulroney was born on Halloween, October 31, 1963, in Alexandria, Virginia. He is the middle child of five siblings: older brothers Sean and Conor, younger brother Kieran (also an actor), and younger sister Moira. As a kid he played cello in his school and city youth orchestras, a skill that later showed up in his acting career since he still performs as a professional musician.
Career Path
Mulroney made his film debut in 1988’s Sunset and gained early attention that same year in Young Guns. Through the 1990s he built a steady run of roles in films including Point of No Return, Bad Girls, Copycat, and How to Make an American Quilt, before landing his best-known part in My Best Friend’s Wedding in 1997, which became his highest-grossing film. In the 2000s he appeared in About Schmidt, The Wedding Date, The Family Stone, and Zodiac, and in the 2010s he took on roles in August: Osage County and Insidious: Chapter 3.
On television, he’s played Sean Pierce on Shameless, Dr. Walter Wallace on Pure Genius, and Bobby Sheridan on The Purge, along with a Marvel role as President Ritson in Secret Invasion. His current main role is Chief Dom Pascal on Chicago Fire, a part he’s set to leave early in Season 15, and he also stars as Jed Banks on Netflix’s The Hunting Wives. Outside acting, he tours and records as a cellist, including performing live shows with a band.
Age
Dermot Mulroney is 62 years old as of September 2026, having been born on October 31, 1963.
Religion
His religious beliefs are not documented in any verifiable public record reviewed for this article, so this detail is left unconfirmed rather than guessed.
Spouse/Partner
Mulroney was married to actress Catherine Keener from 1990 to 2007, and they have a son together, Clyde Keener Mulroney, who works as a musician and filmmaker. He later married singer-actress Prima Apollinaare, who previously went by the name Tharita Catullé, in December 2010. He filed for divorce from Apollinaare in June 2025, citing irreconcilable differences, and multiple sources close to the pair described the split as amicable.
Net Worth
Estimates of his net worth vary widely across celebrity finance sites, ranging from roughly $2 million to as high as $15 million depending on the source. None of these figures come from an official financial filing, so no single number should be treated as confirmed.
Parents
His father, Michael Mulroney, was originally from Elkader, Iowa, and worked as a tax attorney in Washington, D.C. for about thirty years before becoming a law professor at Villanova University School of Law in the 1990s. His mother, Ellen Mulroney, was from Manchester, Iowa, and worked as a regional theater actress.
Height
Multiple celebrity profile sites list his height as 5 feet 10 inches, or about 1.77 meters. This figure is commonly repeated but has not been confirmed through an official record, so it should be treated as a widely cited estimate rather than a verified fact.
Education
Dermot Mulroney attended Northwestern University, according to his standard biographical record.
Hometown/State of Origin
He was born and spent part of his early life in Alexandria, Virginia, a city just outside Washington, D.C.
Official Reference Link
Several accounts online claim to be Dermot Mulroney’s official social media, but none could be independently verified as authentic for this article. For reliable, up-to-date credit information, his official IMDb profile is a dependable public reference.
Quick fact check: Some sites list his second wife’s birthplace as Italy and describe her as Italian-Argentine; both details appear in coverage of her music career, but her exact background beyond “Italian” has not been consistently confirmed across sources.
Key Facts Timeline
| Year | Event |
|---|---|
| October 31, 1963 | Born in Alexandria, Virginia |
| 1988 | Film debut in Sunset; breakout role in Young Guns |
| 1990 | Married Catherine Keener |
| 1997 | Starred in My Best Friend’s Wedding, his highest-grossing film |
| 2007 | Divorced Catherine Keener |
| December 2010 | Married Prima Apollinaare |
| 2015–2019 | Recurring TV roles in Shameless, Pure Genius, and The Purge |
| 2024 | Joined Chicago Fire as Chief Dom Pascal |
| June 2025 | Filed for divorce from Prima Apollinaare |
| 2026 | Announced early exit from Chicago Fire in Season 15 |
Reader Questions (FAQ)
Is Dermot Mulroney leaving Chicago Fire?
Yes. Deadline reported that Mulroney will exit the show early in Season 15, wrapping up his character Chief Dom Pascal’s storyline ahead of schedule. No official reason has been announced by NBC as of this writing.
What is Dermot Mulroney’s most famous movie?
He is best known for playing Michael O’Neal in the 1997 romantic comedy My Best Friend’s Wedding, opposite Julia Roberts and Cameron Diaz. It remains his highest-grossing film to date.
Is Dermot Mulroney married?
No, he is not currently married. He filed for divorce from his second wife, musician Prima Apollinaare, in June 2025, after being married to her since December 2010.
Does Dermot Mulroney have children?
Yes, he has three children. He has a son, Clyde Keener Mulroney, from his first marriage to Catherine Keener, and two daughters, Mabel Ray and Sally June, from his marriage to Prima Apollinaare.
How old is Dermot Mulroney?
He was born on October 31, 1963, which makes him 62 years old as of September 2026.
Where is Dermot Mulroney from?
He was born in Alexandria, Virginia, a city near Washington, D.C. His father’s family was originally from Elkader, Iowa, and his mother’s family was from Manchester, Iowa.
Is Dermot Mulroney a musician too?
Yes, he plays cello and has performed on film soundtracks and live shows throughout his career, in addition to acting. He learned the instrument as a child and has kept it as an active part of his work.
Wrap-Up
Dermot Mulroney’s career shows how a single breakout role, in his case My Best Friend’s Wedding, can define public perception of an actor for decades even as they keep working steadily in other projects. His mix of film roles, recurring TV parts, and music work is part of why he’s stayed visible in Hollywood since the late 1980s without ever becoming a tabloid fixture.
His upcoming exit from Chicago Fire and his finalized divorce mark a period of visible change in both his professional and personal life heading into the back half of 2026. Given his track record of moving from one steady TV or film role into the next, it would not be surprising to see him attached to a new project once his Chicago Fire storyline wraps, though nothing on that front has been confirmed yet.
Thomas Andrew is the founder of Odubio.com, a digital platform sharing inspiring biographies, news, and stories about global icons and achievers.