This article refers to the King of Durin's Folk. For other namesakes, see Thorin (disambiguation).

Thorin I was the son of Thráin I, whom he succeeded as King under the Mountain and King of Durin's Folk.


Hearing of greater riches in the Grey Mountains, Thorin decided to leave the Lonely Mountain with the greater part of his folk, along with the Arkenstone, leaving the mountain abandoned for over three hundred years until his descendant Thrór reclaimed it. He was succeeded as king by his son Glóin.

His grandfather was Náin I, who was 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 and the namesake of Thorin Oakenshield, who led the quest to reclaim the Lonely Mountain from the dragon Smaug, and afterwards died in the Battle of Five Armies.[1]

King of Durin's Folk
Preceded by
Thráin I
Thorin I Succeeded by
TA 2190 - TA 2289
King under the Mountain
Preceded by
Thráin I
Thorin I Succeeded by
TA 2190TA 2210


  1. The Lord of the Rings, Appendix A: Annals of the Kings and Rulers, III: Durin's Folk