Following the destruction of the Northern Kingdom of Arnor, Elrond fostered the line of Isildur in Rivendell, shielding the future kings—including Aragorn—from Sauron's gaze.
Elrond is called "Half-elven" (Peredhil in Sindarin) because he directly descends from both Elves and Men. Elrond Half-elven
He served as the herald to Gil-galad, the last High King of the Noldor, and fought on the front lines during the Siege of Barad-dûr. He witnessed Isildur cut the One Ring from Sauron's hand. The Third Age Following the destruction of the Northern Kingdom of