Glorfindel reincarnated

[cellurdur]

Originally Posted by Zigûr

Despite being born in Middle-earth, Elrond was an Elda, as his father was half-Noldo and his mother "half-Luthien" as it were (who was the daughter of Thingol, who was counted among the Eldar despite spending little time in Aman).
At least, this is how I have always understood the situation.

Tolkien more than once explicitly states that Arwen and Elrond were not part of the Eldar, but Half-elven. Even in LOTR you will notice that Elrond is never grouped together with elves. Even his sons, who are over 3/4 elvish are kept separate from elves.