Caron is a demon governed by the infernal king Malgaras according to the Ars Theurgia. He is the chief duke of the night with thirty (legions of) lesser demons under him. Through Malgaras he is associated to the court of the West. When appearing in the Sacred Magic of Abramelin the Mage he serves the infernal prince Ariton. Caron is most probably a variant of Charon, the legendary Greek ferryman who ferries the dead across the river Styx into Hades. A.G.H.
Belanger, Michelle. The Dictionary of Demon: Names of the Damneds. Llewellen Publications. 2010. ebook.