Thorin III Stonehelm

Thorin III Stonehelm was the son and heir of Dáin II Ironfoot of Durin's folk, who was king of the Dwarves of Erebor and the Iron Hills in Rhovanion.
== Biography ==
Thorin Stonehelm was born in the Iron Hills to Lord Dáin Ironfoot. During his younger years he saw his people able to finally return to the Lonely Mountain after many years of further exile, and wandering. He himself became a prince with the accession of his father as King under the Mountain, and over all the Longbeards.
During the War of the Ring at the age of one hundred fifty-three, Thorin fought the Easterlings in the Battle of Dale, and took refuge in the Lonely Mountain after his father was killed at its gates, along with Brand, the King of Dale. Thorin then became King under the Mountain.
When the news of Sauron's defeat in the South came to the ears of the enemy, they became dismayed and the Dwarves and Men came forth from the mountain and routed them driving them back of the river Redwater, never troubling them again.
With his father's death, Thorin became king in TA 3019. Thorin III helped rebuild the Lonely Mountain and Dale, and prospered. His realm became a close ally of the Reunited Kingdom of Arnor and Gondor of King Elessar.
During his rule, Gimli, son of Glóin, led a number of Dwarves south to the Glittering Caves, where a new city was settled. Thorin III had a descendant, who was held to be the reincarnation of Durin the Deathless, and who succeeded him at his death as Durin VII the Last.