Complex sentence: According to the Heimskringla, Erik was also the king of Westrogothia, Dalia, Bahusia and Wermelandia, but the saga relates that he lost all of those provinces except for Westrogothia to Harald Fairhair.
Split into simpler sentences: According to the Heimskringla, was also the king of Westrogothia, Dalia, Bahusia and Wermelandia. The saga relates that he lost all of those provinces except for Westrogothia to Harald Fairhair.