The son of Arathorn II and his wife Gilraen, Aragorn was born on 1 March, T.A. 2931. Through his ancestor Elendil (whom he closely resembled) Aragorn was a descendant of the first king of Númenor,Elros Tar-Minyatur; the twin brother of Elrond.
When Aragorn was two years old, his father was killed while pursuing orcs. Aragorn was afterwards fostered in Rivendell by Elrond. At the request of his mother, his lineage was kept secret, as she feared he would be killed like his father and grandfather if his true identity as Isildur's heir became known. Aragorn was renamed Estel ("hope" in Tolkien's invented language of Sindarin) to hide his existence from Sauron and his servants. He was not told about his heritage until he came of age in 2951.
Elrond revealed to Aragorn his true name and ancestry, and delivered to him the shards of Elendil's sword Narsil, and also the Ring of Barahir. He withheld the Sceptre of Annúminas from him until he "came of the right" to possess it. Aragorn met and fell in love with Arwen, Elrond'