|Date of birth||Early-Second Age|
|Date of death||TA 2463|
|Culture||Silvan Elves (Wood-elves of Greenwood)|
|Lord of the Rings film trilogy|
Undómiel was born in the early years of the Second Age. Living in Greenwood the Great, Undómiel was among the Silvan Elves that welcomed Oropher and accepted him as their King, who ruled from his capital on Amon Lanc.
War of the Last AllianceEdit
Despite the Silvan Elves' hostility towards the Dwarves and the Noldor - and their desire to stay away from the affairs of the rest of the world, Undómiel joined the Last Alliance of Elves and Men. In SA 3431, Undómiel and the Silvan Elves proved how strong and brave they were the War of the Last Alliance. In the very first assault upon Mordor, Undómiel participated in the Battle of Dagorlad and survived while Oropher himself was killed soon afterwards.
While the forces of the Last Alliance had forced their way through the Black Gate into Mordor itself, Undómiel promised to avenge her King and fought in the siege of Barad-dûr. There, she along with the forces of Gil-galad, Elendil and Thranduil laid siege to the tower, but could not breach its gates when the Dark Lord put together a strong defence with a seemingly unexhaustible supply of projectile and sorties, which inflicted heavy casualties to both Dwarves, Elves, and Humans. The battle was a victory when she witnessed Sauron's death as Isildur cut The One Ring from his finger with the hilt of his fathers blade.