Larysas (Shard Ne'Vaal Supplement)
From D&D Wiki
Larysas is a country in the loosest sense. Tracing back to when human nomads roamed the frigid tundra, Larysas is the result of some of these nomadic groups eventually establishing the land as their territory in which to roam.
As stated above, Larysas was initially just a piece of land some nomads migrated on within borders. On different seasons they would go to different portions of the country to follow their hunts. This is believed to have changed in the False Dawn Era, when more stringent forms of nations were forming. As their land was neighbor not only to the Scepter range with its brutish inhabitants, they were also targets of Hocheim just a mountain away.