Guest Stars Jennie Jacques as Judith Maude Hirst as Helga Moe Dunford as Aethelwulf George Blagden as Athelstan Morgane Polanski as Princess Gisla Owen Roe as Count Odo Amy Bailey as Princess Kwenthrith Luke Shanahan as Ubbe Stephen Rockett as Hvitserk Seán T. Ó Meallaigh as Prudentius