He is Vignar Gray-Mane’s brother, the man who becomes Jarl should the Stormcloaks take Whiterun, and is the only merchant you can purchase Skyforged steel from, making him a unique vendor.
The reported best blacksmith in all of Skyrim, and personal blacksmith of the Companions, Eorlund Gray-Mane, is a legend among anyone who works with weapons.
