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

Fingolfin is the second son of Finwe and the eldest of Feanor's half-brothers. Feanor is banished when he draws his sword on Fingolfin. Most of the Noldor follow Fingolfin when he is persuaded by Feanor to leave Valinor. He is the High King of Beleriand and dwells in Hithlum. Morgoth kills Fingolfin in single combat.