Elrond

A character from J. R. R. Tolkien's fantasy universe of Middle-earth, Elrond the Half-Elven was the Lord of Rivendell, one of the mighty kings of old that still remained in Middle-earth in its Third Age. He was the son of Eärendil and Elwing, born in Beleriand, in the First Age, making him well over 6,000 years old by the time of the events described in The Lord of the Rings. Elrond's brother was Elros, Tar-Minyatur, the first High King of the Númenoreans.

Warning: Wikipedia contains spoilers

Elrond went to Lindon with the household of Gil-galad, the last High King of the Noldor when Beleriand was destroyed in the First Age. In the Second Age, he was sent to Eregion by Gil-galad, and after the destruction of Eregion, he fled into Eriador, where he founded Rivendell, one of the last remaining strongholds against Sauron, with the remaining Noldor of Eregion.

Near the end of the Second Age, he was with Gil-galad in the Battle of Dagorlad[?], where Sauron was defeated for the first time. In the year 100 of the Third Age, he wed Celebrían, daughter of Celeborn and Galadriel. In the year 139, twins were born named Elrohir and Elladan, and in 231 a daughter, Arwen Undómiel. Elrond remained in Rivendell until the destruction of the One Ring, and of Sauron, when he went to Minas Tirith to see his daughter Arwen wed King Elessar (also known as Aragorn or Strider), King of Gondor. On September 29, 3021 of the Third Age, Elrond left Middle-earth to go over the Sea with the other Ringbearers (Galadriel, Frodo, Bilbo and Gandalf), never to return.

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In the 2001 to 2003 film adaptation of The Lord of the Rings, Elrond is played by Hugo Weaving.