The Men of the Grey Mountains, also known as the Ymirsfólk or simply Ymirs, were a coalition of northron clans indigenious to the mountains and foothills of the Ered Mithrin. They were widely believed to have been descendants of the Béoac of the First Age and kinsmen of the Anduin River Culture and Beornings. By the late Third Age the culture had almost vanished, having been driven out of their old homes by the Grey Mountain Orcs, a few clans seem to have had survived in the shadow of the lands north of Erebor, their descendants later became part of the Barding Reach.