Guest Stars Jennie Jacques as Judith Maude Hirst as Helga John Kavanagh as The Seer Moe Dunford as Aethelwulf Jefferson Hall as Torstein Cormac Melia as Ubbe Gaia Weiss as Porunn Cathal O'hallin as Hvitserk Amy Bailey as Princess Kwenthrith Robert MacDomhnail as Viking Warrior Christopher McHallem as First Saxon Noble Kevin Durand as Harbard the Wanderer Aaron Monaghan as Burgred Lochlainn O'Mearáin as First Noble Connor Ryan as Second Noble Muiris Crowley as Third Saxon Noble Marty Maguire as Second Saxon Noble Niamh Algar as Second Woman Lalor Roddy as Fisherman Amy Potter as Woman John C. Merriman as Second Mercian Archer Tony Owen as Older Man