Dior is a
fictional character in
Tolkien's
Middle-earth.
Dior was born to Beren and Lúthien. He is called Elúchil, Thingol's Heir. He had three children:
His sons were seized in the Sack of
Menegroth and left to die in the woods of
Doriath by
Caranthir the Dark, one of the
sons of Fëanor. (
Caranthir's brother
Maedhros repented of this deed by vainly yet desperately searching for them in the forests.)
His daughter
Elwing, however, went on to marry
Earendil the Mariner and helped to end the suffering of Middle-earth on more than one level: she was a messenger to
Valinor which brought on the
War of Wrath, thus destroying
Morgoth's dominion; and she gave birth to
Elrond and
Elros, without whom (and their descendants)
Sauron the Abhorred would have his own dominion.