Aragorn, Son of Arathorn is a fictional character of J.R.R. Tolkien's Middle-earth. Aragorn aids Frodo Baggins on his quest to destroy the One Ring while bringing himself closer to reclaiming the kingship of Gondor.
Aragorn's Lineage
Though Aragorn is first introduced as a man named Strider from the mysterious group of forest-dwelling men called Rangers, he is part of a lost line of kings of the city of Gondor. Late in the books (but not the films), Aragorn reveals that the Rangers are his patrilineal line of kings in self-imposed exile. What's more, in Tolkien's history of Middle-earth called The Silmarillion it is revealed that Aragorn's line is descended from the union of an Elf and a human, making him partially elven.
Aragorn Timeline
The Thain's Book: Aragorn Important Dates
Third Age, March 1, 2931: Born
2951: Elrond tells him his true name and family history | Meets Arwen
2956: Meets Gandalf
2980: Becomes betrothed to Arwen
3001: Begins search for Gollum
February 1, 3018: Captures Gollum
September 29, 3018: Meets Frodo Baggins in Bree
October 26, 3018: Announces his plan to go to Minas Tirith at the Council of Elrond
December 18, 3018: Joins Fellowship of the Ring
February 26, 3019: The breaking of the Fellowship | Follows the Uruk-hai to save Merry and Pippin
March 5, 3019: Claims Palantir of Orthanc
March 6, 3019: Reveals himself to Sauron
March 8, 3019: Travels Paths of the Dead and summons Dead Men of Dunharrow to mend broken vow
March 13, 3019: Captures The Corsairs of Umbar fleet
March 15, 3019: Victory at Battle of Pelennor Fields | Heals Faramir, Eowyn and Merry
March 25, 3019: Battle of Morannon | The One Ring destroyed
May 1, 3019: Is crowned King
Midsummer's Day: Marries Arwen
Fourth Age, year 120: Dies