Guilin

Guilin was a Noldo of Nargothrond, the father of two sons, Gwindor and Gelmir. Guilin himself makes no direct appearances in Tolkien's works. The most we can say is that he does not appear to be dwelling where we would expect him, in Nargothrond, in the later First Age, but the reason for this is a mystery.

Though we know little of Guilin's life, his sons had a great impact on the history of the Elves. It was Gwindor's desperation over the torture of his brother Gelmir that triggered the Nirnaeth Arnoediad and long after that dreadful battle he led Túrin back to Nargothrond, starting a chain of events that would lead to its destruction.