According to notes written by J.R.R. Tolkien around 1959, it is mentioned that Eldarion, the son of Aragorn and Arwen, lived until the age of 125. This information suggests that Eldarion had a long and prosperous life, likely passing away in the Fourth Age.
Tolkien’s notes often provide additional insights into the lives of characters beyond what is explicitly mentioned in the published works. In this case, the mention of Eldarion’s lifespan indicates that he lived for a considerable amount of time, possibly inheriting his father’s long lifespan as a Dúnedain.
It is interesting to note that Eldarion’s age of 125 is significantly longer than the average lifespan of men in Middle-earth during the later ages. This longevity could be attributed to his lineage as a descendant of the Dúnedain, who were blessed with extended lifespans due to their Elven blood.
Although the specific details of Eldarion’s life are not extensively explored in Tolkien’s works, we can infer that he likely played a significant role in the Fourth Age. As the son of Aragorn, the King of Gondor and Arnor, Eldarion would have been a prominent figure in the political and social landscape of Middle-earth during that time.
Considering the long lifespans of the Dúnedain and Eldarion’s noble heritage, it is conceivable that he ruled over Gondor for many years, ensuring the prosperity and stability of his kingdom. However, without further information from Tolkien’s writings, it is difficult to provide a more detailed account of Eldarion’s life and accomplishments.
It is worth mentioning that while this information about Eldarion’s lifespan comes from Tolkien’s notes, it is important to recognize that these notes are not always considered canonical. Tolkien’s writings underwent numerous revisions and changes throughout his life, and not all of his notes were incorporated into the published works.
According to Tolkien’s notes, Eldarion, the son of Aragorn and Arwen, lived until the age of 125. Although further details about his life and accomplishments are not provided, it can be inferred that Eldarion had a significant role in the Fourth Age, likely ruling over Gondor and contributing to the continued prosperity of his kingdom.