Brian Fortune is an Irish actor based in Dublin. In Game of Thrones he plays the role of Othell Yarwyck, the Night's Watch First Builder. The actor had appeared in Season 1 as an unnamed 'Night's Watch Officer' at first believed to be Bowen Marsh, but the character was explicitly identified as Yarwyck in Season 4 and Michael Condron was cast as Bowen Marsh for Season 5.