Snorri Sturluson,
Heimskringla — King Olaf Trygvason's Saga…
“ Earl Eirik, the son of Earl Hakon, his brother Svein, and their friends and relations, fled out of the country, and went east to Sweden to King Olaf the Swede, who gave them a good reception. So says Thord Kolbeinson: --"O thou whom bad men drove away, After the bondes by foul play, Took Hakon's life! Fate will pursue These bloody wolves, and make them rue. When the host came from out the West, Like some tall stately war-ship's mast, I saw the son of Trygve stand, Surveying proud his native land." ”
