Gil-galad was a Sindarin word that means "Star of Radiance", from gil ("star") and galad ("light, radiance"). His name in Quenya was Artanáro which means "High Flame". In Sindarin, Artanáro translates to Rodnor. It was first conceived that Gil-galad's birth name was Ereinion instead of his epessë. The name Ereinion means "Scion of Kings", from erain ("kings") and ion ("son").
Gil-galad, also called Ereinion Gil-galad, was a Ñoldorin Elf, son of Orodreth, and last High King of the Ñoldor in Middle-earth and bore many titles, including, High King of the Elves of the West, King of the Eldar, King of Lindon, Lord of the High Elves, and the Lord of Eriador.
Gil-galad held the highest authority among the Elves and he ruled and was respected by both the Noldor and the Sindar. He was considered the High King of the Elves in Middle Earth. He formed the Last Alliance of Elves and Men with Elendil, and he led the Elves, who were undivided, to war against Sauron during this time. His death marked the end of the Ñoldor Kingdoms in Middle-earth, though many Noldor still dwelt in Imladris throughout the Third Age.