Solør is a Norwegian landscape consisting of the Glomma valley between Elverum in the north and Kongsvinger in the south. It is part of the county of Hedmark, and includes the municipalities Våler, Åsnes and Grue.
Halfdan was brought up in Soleyar, in the house of his mother's brother Solve, and was called Halfdan Hvitbein.
They took the resolution, therefore, to cross the Eida forest with all their men, and came quite unexpectedly into Soleyar, where they put to death King Solve, and took Halfdan Hvitbein prisoner, and made him their chief, and gave him the title of king.
Thereupon he subdued Soleyar, and proceeding with his army into Raumarike, plundered there, and laid that district also in subjection by force of arms.
Consequently, they resolved to cross the Ed Forest and settle in Norway and happened to end up in Soleyar where they killed king Sölve and took Halfdan prisoner.
Halfdan subjugated all of Soleyar and took his army into Romerike and subjugated that province as well.
Halfdan was to become a great king, who married ÃÂ sa, the daughter of king Eystein, the ruler of Oppland and Hedmark.