5 Shocking Facts About Dermot Mulroney's Second Marriage And Recent 2025 Divorce Filing

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Dermot Mulroney, the beloved actor known for roles in classics like My Best Friend's Wedding and TV hits such as Chicago Fire, is once again making headlines, but this time for a dramatic shift in his personal life. As of June 2025, the actor officially filed for divorce from his second wife, Prima Apollinaare, after nearly 15 years of marriage, bringing a quiet, long-term relationship into the public spotlight.

The filing, which cited the standard "irreconcilable differences," marks the end of a partnership that many fans knew little about, primarily due to the couple’s dedication to privacy. This recent news has sparked intense curiosity about his wife, her mysterious name change, and the family they built together, revealing a complex marital history that contrasts sharply with his on-screen romantic image.

Dermot Mulroney: A Complete Biography and Professional Profile

Dermot Mulroney is one of Hollywood’s most versatile and enduring actors, known for effortlessly transitioning between romantic leads, intense dramatic roles, and compelling villains.

  • Full Name: Dermot Patrick Mulroney
  • Date of Birth: October 31, 1963
  • Age (as of December 2025): 62 years old
  • Place of Birth: Alexandria, Virginia, U.S.
  • Parents: Ellen B. (an amateur actress) and Michael Mulroney (a law professor)
  • Siblings: He has four siblings: Conor, Kieran (also an actor), Moira, and Sean.
  • Education: Graduated from Northwestern University.
  • Notable Film Credits: Young Guns, My Best Friend's Wedding, About Schmidt, Zodiac, August: Osage County, The Family Stone.
  • Notable TV Credits: Friends, New Girl, Shameless, Chicago Fire (as Lieutenant Severide's rival), Hanna.
  • Unique Skill: Mulroney is an accomplished cellist and has contributed music to several film scores, including Mission: Impossible III.
  • Net Worth Estimate (2025): Reported to be in the range of $2 million to $11 million, stemming from his extensive career in film and television.

The Enigmatic Life of Prima Apollinaare (Formerly Tharita Cesaroni)

The woman who became Dermot Mulroney’s second wife is an artist in her own right, though she maintains a much lower public profile than her famous husband. Before she was Prima Apollinaare, she was known as Tharita Cesaroni, or Tharita Cesaroni Catulle.

Prima Apollinaare Biography:

  • Birth Name: Tharita Cesaroni Catulle
  • Moniker/Stage Name: Prima Apollinaare (Name legally changed in 2015)
  • Date of Birth: October 31, 1973
  • Place of Birth: Milan, Italy
  • Profession: Cinematographer, Film Producer, and Music Artist/Singer-Songwriter.
  • Background: Born and raised in Italy, she began her career in the arts there before moving to the United States.
  • Relationship Timeline: Began dating Dermot Mulroney in 2008 and married him that same year.

The name change from Tharita Cesaroni to Prima Apollinaare in 2015 was a notable point of interest, though the specific reasons for the change remain private. The name "Prima Apollinaare" is believed to be her artistic alias, reflecting her work as a singer and music artist.

The Two Marriages: Catherine Keener and Prima Apollinaare

Dermot Mulroney has been married twice, with both relationships lasting over a decade and resulting in three children. His marital journey offers a fascinating glimpse into the life of a working Hollywood actor.

First Marriage: Catherine Keener (1990–2007)

Mulroney's first wife was the Academy Award-nominated actress Catherine Keener. The couple met in 1986 on the set of the film Survival Quest and married in 1990. Their marriage lasted 17 years, ending in divorce in 2007. They share one son, Clyde Keener Mulroney, born in 1999, who has pursued a career in music.

Second Marriage: Prima Apollinaare (2008–2025 Divorce Filing)

The actor met Prima Apollinaare (then Tharita Cesaroni) shortly after his separation from Keener. They married in 2008 and quickly started a family, welcoming two daughters. Their relationship was notably private, with the couple rarely appearing together at public events, a stark contrast to his high-profile first marriage.

The recent June 2025 divorce filing from Prima Apollinaare came as a surprise to many, especially given the couple's long history and shared family.

The Shocking Details of the 2025 Divorce and Family Life

The news of the separation from Prima Apollinaare is the most current and significant update on Dermot Mulroney’s personal life. The details of the filing provide a framework for the end of their long relationship.

  1. Irreconcilable Differences Cited: Like many celebrity separations, Mulroney cited the standard "irreconcilable differences" as the reason for the split. There were no immediate public statements or dramatic accusations, suggesting the split may be amicable or, at the very least, private.
  2. The Separation Date is "TBD": In the divorce documents filed in June 2025, Mulroney did not list a specific date of separation, marking it as "TBD." This detail often indicates that the couple may have been living together or attempting to reconcile until the moment of the filing, or that the separation was a gradual process.
  3. Two Daughters Shared: Dermot Mulroney and Prima Apollinaare have two daughters together. Their names are Mabel Ray Mulroney and Sally June Mulroney. As of the 2025 filing, the girls are approximately 17 and 15 years old, respectively.
  4. A Shared Birthday Connection: Both Dermot Mulroney and Prima Apollinaare share the same birthday, October 31st, though they are exactly 10 years apart in age (Mulroney born in 1963, Apollinaare in 1973). This unique coincidence was a charming detail of their relationship.
  5. Request for Spousal Support: Reports indicate that Mulroney requested to terminate the court's ability to award spousal support to Apollinaare. This is a common legal maneuver in high-net-worth divorces and will be a key point of negotiation in the dissolution of their marriage.

The Mulroney Children: A Trio of Artists

Dermot Mulroney is a father to three children, all of whom have shown an inclination toward the arts, following in the footsteps of their parents.

  • Clyde Keener Mulroney: Born in 1999, his son with Catherine Keener, Clyde is an established musician and singer-songwriter.
  • Mabel Ray Mulroney: His eldest daughter with Prima Apollinaare.
  • Sally June Mulroney: His youngest daughter with Prima Apollinaare.

The well-being and privacy of Mabel Ray and Sally June will undoubtedly be the primary focus for both Dermot Mulroney and Prima Apollinaare as they navigate the complexities of their 2025 divorce proceedings. The family has always valued discretion, and it is expected that the legal process will be handled with the same level of privacy.

dermot mulroney and wife
dermot mulroney and wife

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