Gunhild's sons levied a great army in Viken (A.D. 963), and sailed along
the land northwards, collecting people and ships on the way out of every
district. They then made known their intent, to proceed northwards with
their army against Earl Hakon in Throndhjem. When Earl Hakon heard this
news, he also collected men, and fitted out ships; and when he heard
what an overwhelming force Gunhild's sons had with them, he steered
south with his fleet to More, pillaging wherever he came, and
killing many people. He then sent the whole of the bonde army back to
Throndhjem; but he himself, with his men-at-arms, proceeded by both the
districts of More and Raumsdal, and had his spies out to the south of
Stad to spy the army of Gunhild's sons; and when he heard they were come
into the Fjords, and were waiting for a fair wind to sail northwards
round Stad, Earl Hakon set out to sea from the north side of Stad, so
far that his sails could not be seen from the land, and then sailed
eastward on a line with the coast, and came to Denmark, from whence he
sailed into the Baltic, and pillaged there during the summer. Gunhild's
sons conducted their army north to Throndhjem, and remained there
the whole summer collecting the scat and duties. But when summer
was advanced they left Sigurd Slefa and Gudron behind; and the other
brothers returned eastward with the levied army they had taken up in
summer.