Hearing of greater riches in the Grey Mountains (Ered Mithrin), he decided to leave the Lonely Mountain with the greater part of his folk, along with the dwarven treasure: The Arkenstone, leaving the mountain abandoned for over three-hundred years until his descendent Thrór reclaimed it. He was succeeded as king by his son Glóin.
His grandfather was Náin I the last ruler of Khazad-dûm before he was killed and the rest of his people driven out by a Balrog. He was also a sixth generation relative of Thorin Oakenshield, his namesake. Thorin Oakenshield died at the Battle of the 5 Armies.
| King of Durin's Folk |
TA 2190 - TA 2289
| King under the Mountain |
TA 2190 – TA 2210