Hvitserk and Björn Ironside mustered fourteen, while Aslaug and Ivar the Boneless marshalled ten ships each. Ivar would not allow his mother Aslaug to go by sea, but she could join the army of riders that would go across land. She accepted and changed her name to Randalin. When the armies met in battle, Ivar told everyone to make such a din that the bellowing from Sibilja could not be heard. This was of no use, however, and so Ivar shot two arrows in each of Sibilja's eyes. However, the cow could not be stopped. Then Ivar asked his men to throw him on top of the cow. Ivar made himself so heavy as he landed on the cow, that she was crushed. The Swedish leidang was beaten and Eysteinn fell. Ragnar's sons commanded that their brother had been avenged and that the Swedes should be spared pillaging. The "Hervarar saga" tells that Eysteinn Beli was the son of Harald Wartooth. "Hervarar saga" made Harald Wartooth the king of Sweden and Sigurd Hring the king of Denmark, while other sources have it the other way round. It tells that Eysteinn inherited Sweden from his father Harald Wartooth and ruled it until he was killed by the sons of Ragnar Lodbrok, as told in "Ragnar Lodbrok's saga". When Ragnar died, Björn Ironside became the king of Sweden. The "Gesta Danorum" (book 9) by Saxo Grammaticus also mentions Eysteinn, but only in passing. It says that Ragnar Lodbrok's son Agnar learnt that his brother Eric had been slain by Osten, the king of Sweden. He wished to avenge his brother but died in the battle. "Skáldatal" says that Eysteinn Beli was the patron of many skalds, including Bragi inn gamli, Grundi prúði, Erpr lútandi, Kálfr þrænzki, Refr ryzki, Ormr oframi, two named Ölvaldi, Ávaldi, Fleinn skáld and Rögnvaldr skáld.