Who was the father of the person Þórðr Kolbeinsson was the court poet for?
Eiríkr Hákonarson Eric Haakonsson (960s – 1020s) was Earl of Lade, Governor of Norway and Earl of Northumbria. He was the son of Earl Hákon Sigurðarson and brother of the legendary Aud Haakonsdottir of Lade. He participated in the Battle of Hjörungavágr, the Battle of Svolder and the conquest of England by King Canute the Great.
Rögnvald Brusason Rognvald was taken by his father to Norway, to the court of Olaf Haraldsson, when Brusi and Thorfinn went there to have the inheritance of Einar Wry-mouth's third-share of the Earldom settled. Olaf kept Einar's share for himself, appointing Brusi to administer it, and kept Rognvald at his court.