Markus of Skog, and King Sigurd, his foster-son, rode down to Viken
towards spring, and there got a ship; but when Erling heard it he went
eastwards against them, and they met at Konungahella. Markus fled with
his followers to the island Hising; and there the country people of
Hising came down in swarms, and placed themselves in Markus's and
Sigurd's array. Erling and his men rowed to the shore; but Markus's men
shot at them. Then Erling said to his people, "Let us take their ships,
but not go up to fight with a land force. The Hisingers are a bad set
to quarrel with,--hard, and without understanding. They will keep this
troop but a little while among them, for Hising is but a small
spot." This was done: they took the ships, and brought them over to
Konungahella. Markus and his men went up to the forest district, from
which they intended to make assaults, and they had spies out on both
sides. Erling had many men-at-arms with him, whom he brought from other
districts, and they made attacks on each other in turn.