Carved upon the deathless door
His name was carved by elven hand
In the city below and books of lore
his artistry would be remembered throughout the land.
(Narvi or Celebrimbor) It's your guess, Celebrimbor was the elf and was known as the greatest "craftsman" throughout the land. He also worked on the door with Narvi. Narvi made the door and is a Dwarf. The question is..whose name is on the door, the elf or dwarf.
Celebrimbor was the son of Curufin, fifth son of Fëanor.
Tom's note: It's been ten years or more since I read the trilogy, but doesn' the door say something like "I, Narvi, carved these runes..."?
Tolkien Gateway: Celebrimbor