History of the Forgotten Realms

The shield dwarves of Clan Shattered Shield arrive in Dareth to find their arctic dwarf cousins beset by the white dragons (and their servitor creatures) of Hoarfaern. They rescue the surviving folk of Dareth and retreat to a lone mountain which they name Mount Sundabar in honor of their home in Delzoun. They commence building a fortress of their own there and elect Embryn Shattered Shield as their king. He leaves his clan to take the name Embryn Dareth.