Wikipedia
Fëanor is a fictional character from J. R. R. Tolkien's legendarium who plays an important part in The Silmarillion. He was the eldest son of Finwë, the High King of the Noldor, and his first wife Míriel Serindë. Fëanor's mother, Míriel, died shortly after giving birth, having given all her strength and essence to him.
Finwë remarried, and had two more sons, Fëanor's half-brothers Fingolfin and Finarfin, and two daughters, Findis and Írimë.
Fëanor is best known as the creator of three gems, the Silmarils, which figure prominently in The Silmarillion and are mentioned briefly in The Lord of the Rings. His name is a compromise between Faenor (in Tolkien's fictional language of Sindarin) and Fëanáro, meaning "Spirit of fire" (in Quenya, another of Tolkien's invented languages). He was originally named Finwë or Finwion after his father and later Curufinwë ("Skilful (son of) Finwë"). Fëanor wedded Nerdanel daughter of Mahtan, who bore him seven sons: Maedhros, Maglor, Celegorm, Curufin, Caranthir, Amras, and Amrod.