Gregorius rowed up the river, and let the ship drive down with the stream against Thorliot. They shot at each other a while, until Thorliot and his comrades jumped overboard; and some of them were killed, some escaped to the land. Then Gregorius rowed to the piers, and let a gangway be cast on shore at the very feet of Hakon's men. There the man who carried his banner was slain, just as he was going to step on shore.
Gregorius ordered Hal, a son of Audun Halson, to take up the banner, which he did, and bore the banner up to the pier. Gregorius followed close after him, held his shield over his head, and protected him as well as himself. As soon as Gregorius came upon the pier, and Hakon's men knew him, they gave way, and made room for him on every side.
Afterwards more people landed from the ships, and then Gregorius made a severe assault with his men; and Hakon's men first moved back, and then ran up into the town. Gregorius pursued them eagerly, drove them twice from the town, and killed many of them.
By the report of all men, never was there so glorious an affair as this of Gregorius; for Hakon had more than 4000 men, and Gregorius not full 400. After the battle, Gregorius said to Hal Audunson,
"Many men, in my opinion, are more agile in battle than ye Icelanders are, for ye are not so exercised as we Norwegians; but none, I think, are so bold under arms as ye are."
King Inge came up soon after, and killed many of the men who had taken part with Hakon; made some pay heavy fines, burnt the houses of some, and some he drove out of the country, or treated otherwise very ill. Hakon fled at first up to Gautland with all his men; but the winter after (A.D. 1159), he proceeded by the upper road to Throndhjem, and came there before Easter.
The Throndhjem people received him well, for they had always served under that shield. It is said that the Throndhjem people took Hakon as king, on the terms that he should have from Inge the third part of Norway as his paternal heritage. King Inge and Gregorius were in Viken, and Gregorius wanted to make an expedition against the party in the north; but it came to nothing that winter, as many dissuaded from it.