Guest Stars Arnas Fedaravicius as Sihtric Mark Rowley as Finan Cavan Clerkin as Father Pyrlig Timothy Innes as Edward Ewan Mitchell as Osferth Jeppe Beck Laursen as Haesten Adrian Bouchet as Steapa Amelia Clarkson as Aelflaed Magnus Bruun as Cnut Kevin Eldon as Bishop Erkenwald Ed Birch as Sigebriht Ciarán Owens as Tidman