A legend says that the Wizard Gandalf had brought such a stone, called the Elessar, from Valinor. He gave the Elessar to the Elven Lady Galadriel and remarked prophetically that she would pass it to another, who will also be called Elessar. From this would come Aragorn's royal name Elessar (Quenya for "Elfstone").
Elessar is translated in the legendarium as "elf-stone" from the roots 'elen' (star, elf) and 'sar' (stone), after the literal green elvish gemstone Aragorn wears in parts of LOTR.
Galadriel: I amar prestar aen, han mathon ne nen, han mathon ne chae a han noston ned 'wilith. Galadriel: 'The world is changed; I can feel it in the water, I can feel it in the earth, I can smell it in the air. ' Aragorn thanking Brego for his awakening.
Elessar means “elfstone” and refers to a jewel - an eagle, with a green gem. Galadriel gave it to Aragorn when the fellowship was leaving Lothlorien. The people of Gondor began to call Aragon by that name because they could see him wearing it.
The story was abandoned, but Tolkien reused the characters and events. Isildur features briefly in voiced-over flashback sequences of Peter Jackson's The Lord of the Rings film trilogy. The video game Middle-earth: Shadow of War departs from Tolkien's narrative by having Sauron make Isildur into a Nazgûl or ringwraith.
Isildur was Aragorn's remote ancestor. He died at the beginning of the Third Age (TA), in TA 2. Aragorn was born 2929 years later, on March 1, TA 2931. His father was Arathorn II, Chieftain of the Dunedain.
At the bidding of Elrond, his lineage was kept secret, as Elrond 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 Sindarin) to hide his existence from Sauron and his servants.
Elessar, the Elfstone of the House of Elendil.” The Gift of Galadriel to Aragorn. At last the feast on the green lawn near the meeting of the Silverlode and the Anduin draws to a close and it is time for partings. Galadriel speaks to the Fellowship.
A. Aragorn is his given name, Strider is a nickname given to him by the residents of Bree, Elessar is the name he took when he was crowned king of Gondor and Arnor. Technically he was crowned Elessar Telcontar, Telcontar is Noldorin Elvish for “Strider.”
Elros was approximately the 63rd great-grandfather to Aragorn. This also means that Elrond was his equally distant great-uncle, making Arwen (his wife) his first cousin, 64 times removed.
Isildur was Aragorn's remote ancestor. He died at the beginning of the Third Age (TA), in TA 2. Aragorn was born 2929 years later, on March 1, TA 2931. His father was Arathorn II, Chieftain of the Dunedain.
Eldarion was born in the first year of the Fourth Age. He did not inherit the choice of becoming an Elf, but had a long youth like one, having an appeareance of 20 years old until 60. Eldarion became the second King of the Reunited Kingdom after the death of his father Elessar in Fo.
When we first meet Boromir, at Rivendell, he has no idea who Aragorn even is, much less that he is a descendant of both Isildur and Anarion, and his rightful king.
As his "lifeforce" is imbude in the ring which prevents him from going into the Elven afterlife, and as such keeps him in the mortal plane. But he is a wraith in the first game, before his new ring is ever created. The ritual done to Tallion at the beginning of Shadow of Mordor summoned Celebrimbor into Tallion's body.
Besides not having the will to destroy the Ring, pushing Isildur into Mount Doom would have had some practical consequences. In another passage from The Silmarillion, Elrond and Círdan counseled Isildur to destroy the Ring, but he refused, saying, "This I will have as weregild for my father's death, and my brother's.
Defeated by the Host of Valinor in the War of Wrath, Morgoth was banished from Middle-earth into the Timeless Void, though it was prophesied that he would one day return.
Aragorn was a descendant of Isildur, who was a descendant of Elros. So, Aragorn did have Elvish blood in him. Granted, the Elvish blood was many generations removed, and for that matter, Elros had declined his bid for immortality. So, Aragorn's status as part Elf was severely diminished.
Through her great-grandmother, Idril, Arwen was a descendant of King Turgon of the Noldor. Through her mother, she was the granddaughter of the Elf-queen Galadriel of Lothlórien. Through both of her parents, Arwen was a direct descendant of the ancient Elven House of Finwë.
Summary. Aragorn's age in The Lord of the Rings is 87, thanks to his Dúnedain heritage. The Dúnedain have longer lifespans than ordinary men, but not as long as Elves. Aragorn becomes the High King and lives to be 210 years old before passing away.
