Fëanor

Fëanor, also known as Curufinwë, is one of the more famous Elves in the Silmarillion. Born in Valinor, he was the eldest son of Finwë, King of the Noldor, and the father of seven sons, making him possibly the most prolific Elven father ever. He was also the creator of the Silmarils, the jewels filled with the light of the Two Trees of Valinor.

When said jewels were stolen by Morgoth, Fëanor launched an all-out war to get them back, in which he was accompanied by his sons, his half-brothers, and his nephews and niece. While some of these turned back before they reached Middle-earth, the majority pressed on. Not long after reaching Middle-earth, Feanor was killed by Balrogs. The war he began, however, was to carry on through the entire First Age of the Sun.