culture and society | January 01, 2026

Dermot Mulroney Siblings: Meet Kieran Mulroney, Sean Mulroney, Moira Mulroney, Conor Mulroney

Mulroney, the middle child of five siblings, is of Irish and German origin.

Mulroney starred in the 1988 baseball movie Long Gone, for which he received a CableACE Award nomination for Best Supporting Actor in a Miniseries or Movie.

During his 1989 role in Survival Quest, he got to know Catherine Keener. When Mulroney dove into the river during filming in 1986[3], Keener swam perilously close to whitewater rapids before being rescued half a mile downstream.

In the end, the couple was hitched in 1990. The duo would later make appearances in four other movies: Lovely & Amazing (2001), Heroine of Hell (1996), Box of Moonlight (1996), and Living in Oblivion (1995).

Dermot Mulroney Siblings: Meet Kieran Mulroney, Sean Mulroney, Moira Mulroney, Conor Mulroney

He has a younger brother named Kieran Mulroney who works as an actor and playwright, two elder brothers named Conor and Sean, and a younger sister named Moira. Not much is known about their personal lives.