Who is Feanor from The Silmarillion and what is their importance?

Feanor is the eldest son of Finwe and the only chid of Miriel, who dies shortly after giving birth. He is named Curufinwe by his father, but his mother calls him Feanor or Spirit of Fire. He has two half-brothers, Fingolfin and Finarfin. Feanor is the leader of the Noldor's rebellion and the creator of the Silmarils. Feanor is banished from Valinor for drawing his sword against Fingolfin, and when he returns, Morgoth seizes the opportunity to steal the Silmarils. Feanor and his sons vow that no one but themselves will possess a Silmaril. This oath leads Feanor to Angband where he is killed, cursing Morgoth and reminding his sons of their oath.