Icelandic skald and court poet Sigvatr Þórðarson composed the poem Nesjavísur in memory of the battle.

[7] The exact location is unknown, but it is somewhere in today's Langesundfjorden inlet in Frierfjord near Brunlanes, Larvik in Vestfold.

The fighting parties were the throne claimant Olav Haraldsson on one side and an alliance backing the Swedish vassal Sveinn Hákonarson on the other.

However, after Eiríkr joined his brother-in-law Canute the Great in his campaign to conquer England, Danish rule folded, and power was assumed by Olav Haraldsson, a throne claimant from the Harald Fairhair family line.

[10] Olav Haraldsson, on the other hand, had finished raising his forces, and had begun his trip northwards to confront Sveinn.