Dermot Mulroney is from a family of seven – his parents, himself, and four siblings. He happens to be the middle of four sons and a daughter of his parents, hence, he has two older siblings and two younger ones.

Kieran Mulroney, Sean Mulroney, and Conor Mulroney are his brothers while Moira Mulroney happens to be his only sister.

Dermot Mulroney’s 4 siblings: Kieran Mulroney, Sean Mulroney, Moira Mulroney, Conor Mulroney

The five siblings were born to Michael Mulroney and Ellen B. Mulroney. Their father, Michael is from Elkader, Iowa. He was a law professor at Villanova University School of Law beginning in the 1990s, before which he had a private practice in tax law for thirty years in Washington, D.C.

Their mother, Ellen, originally from Manchester, Iowa, was a regional theatre actress

Conor and Sean are the two older siblings of the af osu actor. There is little information about their personal lives on the internet hence, it is very difficult to talk about their marital and parental status.

Just like their personal life, there is no information about their early life as well, hence, it is very difficult to talk about their birthday and age.

Moira and Kieran are the two younger siblings of Dermot. As stated before, Moira is the only sister of the actor, since she is the only female child of their parents.

Kieran Mulroney is also an American actor. He has been acting professionally for a while now. He is known for his numerous television appearances. He is also a musician and screenwriter.