Courtesy of Bjørn Andreas Bull-Hansen's fourth Jomsviking novel, Danelovs Land (Bulgarian translation).
One day they might be translated in English, and if you're into Frans G. Bengtsson's The Long Ships a.k.a. Röde Orm, or Bernard Cornwell's The Saxon Stories a.k.a. Saxon Tales/Saxon Chronicles a.k.a. The Warrior Chronicles a.k.a. The Last Kingdom, you might like them. Quite brutal, mind you, but boy, can the man write.