Fëanor was accounted the greatest of the Deep Elves. In Valinor, he captured the light of the Two Trees to make the three Silmarils. When Melkor stole these, and slew his father Finwë, Feanor rebelled against the Valar and led the greater part of the Noldor into Middle-earth, swearing in the dreadful Oath of Fëanor that he would not rest until the Great Jewels were recovered. . “Fëanor loved his mother dearly, though except in obstinacy their characters were widely different. He was not gentle. He was proud and hot-tempered, and opposition to his will he met not with the quiet steadfastness of his mother but with fierce resentment. He was restless in mind and body,he could become wholly absorbed in works of the finest skills of hand; but he left many things unfinished. … Her death was a lasting grief to Fëanor, and both directly and by its further consequences a main cause of his later disastrous influence on the history of the Ñoldor.” (People of Middle-earth, The Shibboleth of Fëanor)

Yes. thats right. He ain’t dead yet!