Aragorn   AKA: strider     later referred to as King Aragorn

Strider was a relative of the eldest captain of Gondor; Boromir, son of Denethor; steward to the throne of Gondor. Aragorn is Isiludors heir and heir to the throne of the white city. After Sauron had been defeated  King Aragorn asked Lord Gimli to make the walls of Minas tirith to be made of mithril; the strongest know material in middle earth and for the years of king Aragorn and queen arwen it was never breached and rarely attacked and so until king aragorn’s life ended he was around 121 years of age and he was incardinated in a stone dwarven tomb much like the one balin was in when he was found.