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Official Site: JRR Tolkien
Aragorn II is a character from J. R. R. Tolkien's legendarium. He is first introduced by the name Strider, which the hobbits continue to call him. At the end of the Lord of the Rings he is crowned King Elessar Telcontar.
According to the appendices of The Return of the King, Aragorn, named after his ancestor Aragorn I, was born on March 1 in 2931 of the Third Age, the son of Arathorn II and his wife Gilraen. Through his ancestor Elendil (whom he closely resembled) Aragorn was a descendant of Elros Tar-Minyatur, Master Elrond's Half-elven twin brother and the first king of Númenor. Aragorn is descended from both of Elendil's sons, from Isildur through Arvedui, last King of Arthedain, and from Anárion through Arvedui's wife Fíriel.
When Aragorn was only 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 the descendant of Elendil and Heir of Isildur became known. Aragorn was renamed Estel (hope in Sindarin) and 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. It was also around this time that Aragorn met and fell in love with Arwen, Elrond's 2700-year-old daughter, who had newly returned from her mother's homeland of Lórien.