Elorn Firnaithon (F.A. 495 - S.A. 1697) was a Sindarin Elf of Doriath who ruled as the King of the Silvan Elves of Greenwood the Great during the Second Age. Married to Gilwen Feiredis, he is the father of Oropher and grandfather of Thranduil. He was killed by Sauron during the attack on Eregion and the title was passed down to his son.

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