Mercurius
Known to the Greeks as Hermes.
A celebrated god of antiquity, called Hermes by the Greeks. He was the messenger of the gods, and conducted the souls of the dead into the infernal regions. He presided over orators, merchants, and was also the god of thieves. The invention of the lyre is ascribed to him. This he gave to Apollo, and received in exchange the Caduceus, which the god of poetry used to drive the flocks of King Admetus.