From Greek Βάκχος (Bakchos), derived from ἰάχω (iacho) meaning “to shout”. This was another name of the Greek god Dionysos, and it was also the name that the Romans commonly used for him.
Derived from the name of the ancient Mesopotamian city of Babylon. Saint Babylas was a 3rd-century patriarch of Antioch who was martyred during the reign of the Roman emperor Decius.