Filavandrel aén Fidháil of the Silver Tower was the ruler of the Free Elves in Dol Blathanna. He was a proud king, who had hard time bowing his head even when his subjects (including Toruviel) were facing death by famine.
The Hexer
He appeared in the short story The Edge of the World (Kraniec świata) as well as in the episode based on that story, Dolina Kwiatów, in which he was played by Daniel Olbrychski.