The Chronicle of The Kings of Norway
Part 21 - Of Harald's Sons
There was good peace maintained in Norway in the first years of the government of Harald's sons; and as long as their old counsellors were alive, there was some kind of unanimity among them. While Inge and Sigurd were in their childhood, they had a court together; but Eystein, who was come to age of discretion, had a court for himself. But when Inge's and Sigurd's counsellors were dead, — namely, Sadagyrd Bardson, Ottar Birting, Amunde Gyrdson, Thjostolf Alason, Ogmund Svipter, and Ogmund Denger, a brother of Erling Skakke (Erling was not much looked up to while Ogmund lived), — the two kings, Inge and Sigurd divided their courts.
King Inge then got great assistance from Gregorius Dagson, a son of Dag Eilifson by Ragnhild a daughter of Skapte Ogmundson. Gregorius had much property, and was himself a thriving, sagacious man. He presided in the governing the country under King Inge, and the king allowed him to manage his property for him according to his own judgment.