Guest Stars Jennie Jacques as Judith Maude Hirst as Helga Moe Dunford as Aethelwulf Edvin Endre as Erlendur Morgane Polanski as Princess Gisla Huw Parmenter as Roland Owen Roe as Count Odo Karen Hassan as Therese Robert MacDomhnail as Viking Warrior Frankie McCafferty as Sinric Laurence Foster as French Archbishop Greg Orvis as Siegfried Mark Huberman as Louis Carl Shaaban as Jesus Eddie Drew as Odin Anthony Kinahan as French Sentry Ciaran O'Grady as Viking Man Rex Ryon as Soldier Joe Doyle as 1st Older Viking Man Colm O'Brien as Tower Sentry Vincenzo Di Tommaso as Terrifying Creature James Murphy as Ansgar