The Heimskringla on Eirik Arnason
Heimskringla > part in the government with his brother Hardaknut. In the same autumn > 39. Of Eirik And Nikolas.
attestation: On the last day of Marymas (September 8th), Eirik warned Nikolas that fishermen reported long-ships sailing into the fjord, possibly the Birkebeins.
"As the people of the town were coming from matins the last day of Marymas (September 8th), Eirik came up to Nikolas, and said, "Here are some fishermen come from the sea, who report that some long-ships are sailing into the fjord; and people conjecture that these may be the Birkebeins.""
attribution: Eirik warned Nikolas a second time before high mass that the sighting was confirmed by eyewitnesses, and urged riding out of town to gather armed men.
"I believe the news to be true; for here are men who say they saw them under sail; and I think it would be most advisable to ride out of town, and gather men with arms; for it appears to me the townspeople will be too few."
attestation: Eirik departed after mass, telling Nikolas farewell, and Nikolas went home to dinner.
"Nikolas replies, "Farewell, then: we will hold a Thing to-day on the Eyrar, and examine what force of men there may be in the town."
Eirik rode away, and Nikolas went to his house, and then to dinner."