their home to Sweden turned out afterwards [to be] disastrous for the wealth-demanders of the bed of fish of the mountains [SNAKES > GOLD > MEN]. Only that part of them survives, that ran away; they had the more numerous force; it was good to catch Hundingr’s army. Hundmargs ("of a myriad") in the second verse has also been read as Hundings, referring to a chief of the Jomsvikings named Hunding, but there is no other record of such a historical figure, so the argument that this disproves Styrbjörn's historical existence has been generally set aside in favour of the evidence of the other contemporary poem. Styrbjarnar þáttr Svíakappa Styrbjarnar þáttr Svíakappa ('the tale of Styrbjörn the Swedish Champion'), preserved in the Flatey Book, is the source that contains the most material about Styrbjörn. According to the tale, Styrbjörn, who was originally called Björn, was the son of Olof, a brother of King Eric, who died of poisoning when Björn was still a young boy. When he was 12 years old, he asked his uncle King Eric for his birthright, but was denied the co-rulership until he turned 16. One day he got into a fight with and killed a courtier, who had hit him on the nose with a drinking horn. When he was 16, the Thing decided that he was not fit to be king, and instead appointed a man of low birth. His uncle Eric did not want him to stay at home, because of his violent nature and the complaints from the free farmers, so he gave Björn 60 well equipped longships, whereupon the frustrated boy took his sister Gyrid and left. Eric also called him "Styrbjörn", adding Styr- because of his nephew's unruly and quarrelsome nature. He ravaged the shores of the Baltic Sea and when he was twenty, took the stronghold of Jomsborg from its founder Palnetoke and became the ruler of the Jomsvikings. After some time he allied himself with the Danish king Harald Bluetooth and had his sister Gyrid married to him. Styrbjörn married Harald's daughter Tyra Haraldsdotter whom he was given by Harald for conquering Jomsborg. Harald gave him even more warriors and now Styrbjörn set about trying to take the throne of Sweden. He sailed with a huge force which included 200 Danish longships in addition to his own Jomsvikings. When they arrived at Föret (Old Norse Fyris) in Uppland,