Ysgramor is a Atmoran (the progenitors of the Nords NPC in Skyrim.
Ysgramor is a Atmoran Hero. He was the original owner of the weapon: Wuuthrad. He fought against the Snow Elvesin a previous era. He lead the Companions in the retaliatory strike against them for the Night of Tears.
Wuuthrad, Shield of Ysgramor