The Chronicle of The Kings of Norway
Part 2 - King Hakon's Progress Through The Country
Early in winter (935), the king went to the Uplands, and summoned the people to a Thing; and there streamed all to him who could come. He was proclaimed king at every Thing; and then he proceeded eastward to Viken, where his brother's sons, Trygve and Gudrod, and many others, came unto him, and complained of the sorrow and evil his brother Eirik had wrought.
The hatred to King Eirik grew more and more, the more liking all men took to King Hakon; and they got more boldness to say what they thought. King Hakon gave Trygve and Gudrod the title of kings, and the dominions which King Harald had bestowed on their fathers.
Trygve got Ranrike and Vingulmark, and Gudrod, Vestfold; but as they were young, and in the years of childhood, he appointed able men to rule the land for them. He gave them the country on the same conditions as it had been given before, — that they should have half of the scat and revenues with him. Towards spring King Hakon returned north, over the Uplands, to Throndhjem.