Toward his brother, Sweyn, Earl Erik behaved with the same magnanimity that he showed toward all who had claims on him. Sweyn was dissatisfied because of the disparity in their positions; he ruling over one third of the country as the vassal of the Swedish king, while Erik held two thirds as an independent sovereign. These complaints were repeated with growing importunity, until Erik resolved to abandon the government. He called together the chieftains and the mightiest peasants of the country, and abdicated (1015) in favor of his son Haakon and his brother Sweyn, between whom he divided his share of the land in equal portions. As Haakon was not yet of full age, Einar Thambarskelver was appointed his guardian. In the autumn of the year 1015, Earl Erik set sail for England, and assisted Knut the Mighty in the subjugation of that country. He was joined later by his son Haakon, who was expelled from Norway by Olaf Haroldsson, and was compelled to swear that he would never renew his claims to the kingdom. Earl Erik died in England, from the effect of a surgical operation, in 1023 or 1024. Before their expulsion, the Earls Sweyn and Haakon made peace with Erling Skjalgsson, confirming him in the possession of the fiefs which he had received from Olaf Tryggvesson, embracing all the coast-shires from the Sogne-fiord to Lindesness. To cement their friendship, Earl Sweyn gave his daughter, Sigrid,[A] in marriage to Erling's son, Aslak. [Footnote A: Her name is differently given as Sigrid and Gunhild.]