Eluréd and Elurín
From Tolkien Gateway
Eluréd and Elurín were the sons of Dior Eluchíl, son of Beren and Lúthien, and Dior's Elven wife, Nimloth.
The infants Eluréd and Elurín lived with their father in Menegroth, but during the Sack of Doriath by the Sons of Fëanor they were seized by Curufin and Celegorm the Dark and abandoned in the forest to die. Their eldest brother Maedhros repented of the deed and sought in vain for them.
According The Silmarillion the children were never found, and were presumed to have perished in the forest. Tradition among the Nandor of Ossiriand held that they were led to the safety of the woodlands by birds and beasts, and survived.
