Thorin Stonehelm

Thorin III (later titled Stonehelm) is a dwarf of Erebor, the son of Dain Ironfoot, and grandson of Náin

Biography
Thorin was born in Third Age 2866 and named after Thorin I and Thorin Oakenshield. After the death of Thorin and his heirs, Thorin became Prince of Durin's Folk while his father became King.