The Eyrbyggja Saga on Bergthor
Chapter 1 - Herein Is Told How Ketil Flatneb Fares To West-Over-Sea. > Chapter 45 - The Battle In Swordfirth.
- attestation: Bergthor could barely speak when they found him; they carried him over the ice to a boat and rowed to Bank
"they went to where Bergthor lay, who scarce had might to speak. So they brought him with them in over the ice, and so over the neck to the boat, and rowed in the boat out to Bank in the evening"
Chapter 1 - Herein Is Told How Ketil Flatneb Fares To West-Over-Sea. > Chapter 46 - The Peace-Making After These Battles.
attestation: Bergthor died of his wounds, and when goodwife Thorgerd learned of his death she ceased her quarrel with her husband Thormod
"a man came up from the boatstand and told how Bergthor was dead; and when that was known she went to bed, nor is it said that any quarrel fell out betwixt them afterwards"
attestation: Bergthor's death and the wounds of Thorbrand's sons were offset against each other at Swordfirth
"in Swordfirth the slaughter of Bergthor and the wounds of Thorbrand's sons were set one against the other"