The Irish actor's credits also include HBO's “Game of Thrones” and History's “Vikings”
The cast of “Outlander” continues to grow with the addition of Duncan LaCroix in the role of Murtagh Fitzgibbons Fraser.
Author Diana Gabaldon, whose bestselling books provide the basis of the series, broke the casting news on Twitter. Starz and Sony Pictures Television later confirmed the casting.
“I'm Very Pleased Indeed to announce that Murtagh will be played by Duncan Lacroix!” she wrote.
“Outlander” follows the story of Claire Randall, a married combat nurse from 1945 who is mysteriously swept back in time to 1743, where she is immediately thrown into an unknown world where her life is threatened. When she is forced to marry Jamie Fraser (Sam Heughan), a chivalrous and romantic young Scottish warrior, Claire becomes torn between her two lives.
Murtagh is Jamie's godfather, a man of few words who's viciously loyal to his godson. At first, he's skeptical of Claire, but eventually he changes his mind.
Lacroix, an Irish actor, has also appeared on Sky Television's “Primevil” and HBO's “Game of Thrones.” He also appears in the upcoming second season of History's “Vikings” and the new CW period drama, “Reign.”
The series also stars Tobias Menzies, Graham McTavish and Gary Lewis.
John Dahl, whose credits include “Breaking Bad,” “Dexter” and “Justified,” will direct the first two episodes of the upcoming drama, from “Battlestar Galactica” executive producer Ronald D. Moore.