 He had dreamt of his father the night before, and the Norwegians swore that before the battle they could hear the bell that Saint Olaf had given to the Church of St. Clement in Kaupang, in Nidaros – a sign that the saint was watching over his son and the army.It was the greatest victory ever over the Wends, with up to 15,000 killed.Sweyn continued to oppose Magnus in Denmark, although according to "Heimskringla", they reached a settlement by which Sweyn became Earl of Denmark under Magnus.