Fëanor:

The first son of Finwë, and the greatest craftsman of the Noldor, Fëanor created the Silmarils and probably the Palantíri. He married Nerdanel and had a total of seven sons, Celegorm, Curufin, Maglor, Maedhros, Amrod, Amras and Caranthir. When Morgoth stole the Silmarils, Fëanor and his sons swore vengeance and to recover the Silmarils. Fëanor died in Middle-Earth. Though he realized at his death that they would not be able to recover the Silmarils, he pressed his sons to continue the fight anyway. Fëanor is the name by which most know of him, but at his birth he was called Curufinwë.