Murtaugh is a pirate on The Walrus in the West Indies.
During the events of Black Sails: Season 3 Episode 2 XX. played by Stuart Williamson
Captain Flint sees Captain Benjamin Hornigold turn back and orders the topgallants to be taken down. Billy Bones asks Rogelio if the halyard is free and Murtaugh tells him that it is stuck. Murtaugh climbs to the top of the mast to cut the halyard and the ship is hit by a knockdown wave. Some of the men are knocked overboard and De Groot tells Flint that they must take the topgallant in. Flint cuts a rope and part of the mast breaks away and goes flying away with Murtaugh.