Thorin Stonehelm was born in the middle world of Tolkien in 2866. Thorin's father is Dalin, the king of the Iron Mountains. After Dalin's death, Thorin became king of the Iron Mountains. And Thorin fought against the east people in Erebor. And Thorin won this war. After the war, Thorin rebuilt Erebeor. Thorin also repaired the entrance door of Minas Tirith using Mithril. Thorin is a king who is highly respected by the dwarves. It is not known exactly when Thorin died.
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From @manyasli