John Van der Kiste, Kings of the Hellenes: The Greek Kings 1863-1974 (Sutton Publishing, 1994).
William was elected unanimously by the Greek Assembly, and became George I, King of the Hellenes.
The name Hellenes, which was originally the name of a Boeotian tribe in Thessalic Phthia, (Achaea Phthiotis) may be related to the members of the league and may have been broadened to refer to all Greeks when the myth of their patriarch Hellen was invented.