The Hengfors League was first settled by the Dauk and Wozgor people before the First Landing, specifically the lands of Caingorn, Malleore, Creyden, and Woefield, according to a classification by the historian Arnelius Grock.
Secession of Poviss
During the Secession of Poviss in which King Baldwin Thyssen was overthrown, Kovir lost control of East March and the land was divided into minor kingdoms and duchies, which were later re-united by Niedamir of Caingorn.
During the Second Northern War from 1267 to 1268, like Kovir and Poviss, the League maintained neutral, due to the peace agreement signed with Nilfgaard by Neidamir after the first war. This saw a great number of refugees fleeing conflict choosing to live in the League.
The League adopted Caingorn's emblem as their king, Niedamir, came from this kingdom. He then tried to change the silver griffin to a gold dragon to show his heroism in trying to hunt a golden dragon named Villentretenmerth, but this was mocked by the others and so he went back to the original emblem.