Cast Credits Vikings (2013) Guest starring as Bishop Episode 5x09: A Simple Story (Jan 17, 2018) Game of Thrones (2011) Guest starring as Maester Episode 7x01: Dragonstone (Jul 16, 2017) Jack Taylor (2010) Guest starring as Mr. O'Shea Episode 1x02: The Pikemen (Sep 1, 2011) The Clinic (2003) Guest starring as Charlie (2 episodes) Episode 5x08: Episode 8 (Nov 18, 2007) Episode 5x04: Episode 4 (Oct 21, 2007)