Background
O"Byrne was born Brían Francis O"Byrne in Mullagh, County Cavan on 16 May 1967.
O"Byrne was born Brían Francis O"Byrne in Mullagh, County Cavan on 16 May 1967.
O"Byrne also appeared as a priest in the 2004 film Million Dollar Baby. O"Byrne was featured in the 2009–2010 American Broadcasting Company series FlashForward, in which he played Aaron Stark. The show was not renewed.
FlashForward began airing in Ireland on January 4, 2010.
O"Byrne will co-star on the upcoming American Broadcasting Company drama series Gilded Lillys created and produced by Shonda Rhimes.
O"Byrne first attracted notice for his performances in the Martin McDonagh plays The Beauty Queen of Leenane (1996) as Pato Dooley (for which he received a Tony Award nomination for Best Featured Actor in a Play) and The Lonesome West (1997). He is known for taking on serious and dramatic roles, such as a serial killer in Frozen (1998) (for which he won a Tony Award) and a priest accused of child molestation in Doubt (2004), for which he received a Tony Award nomination. In May 2007, O"Byrne was nominated for a Tony Award for his performance as Alexander Herzen in Tom Stoppard"s 2002 trilogy The Coast of Utopia. He appeared in the play by John Patrick Shanley Outside Mullingar on Broadway in 2014,and received a nomination for the 2014 Outer Critics Circle Award, Outstanding Actor In A Play. In 2011, he was nominated for the Primetime Emmy Award for Outstanding Supporting Actor in a Miniseries or a Movie for his performance in Mildred Pierce as Bert Pierce.