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Thrór was a King of Durin's Folk, the grandfather of Thorin Oakenshield, and the great-grandfather of Fíli and Kíli. Thrór lead the Dwarven forces at the Battle of Azanulbizar, where the displaced Dwarves of Erebor attempted to reclaim Moria and met an army of Orcs led by Azog the Defiler. However, Thrór was killed and beheaded in hand-to-hand combat with Azog.
Thrór fighting Azog the Defiler at the Battle of Azanulbizar