Volturnus

A river god of the waters, probably derived from a local Sabine regional cult. His festival, Volturnalia, was held on August 27.

The Volturno river in Campania is named in his honour.

From The History of Rome by Theodor Mommsen

They joined the conqueror of the Romans, indeed, after the cause of Rome seemed fairly lost, but they felt that the question was no longer one of liberty; it was simply the exchange of an Italian for a Phoenician master, and it was not enthusiasm, but despair that threw the Sabellian communities into the arms of the victor. Under such circumstances the war in Italy flagged. Hannibal, who commanded the southern part of the peninsula as far up as the Volturnus and Garganus, and who could not simply abandon these lands again as he had abandoned that of the Celts, had now likewise a frontier to protect, which could not be left uncovered with impunity; and for the purpose of defending the districts that he had gained against the fortresses which everywhere defied him and the armies advancing from the north, and at the same time of resuming the difficult offensive against central Italy, his forces--an army of about 40,000 men, without reckoning the Italian contingents--were far from sufficient.

In the districts using the Sabellian and Etruscan dialects also there must have been at the same period no want of intellectual movement Tragedies in the Etruscan language are mentioned, and vases with Oscan inscriptions show that the makers of them were acquainted with Greek comedy. The question accordingly presents itself, whether, contemporarily with Naevius and Cato, a Hellenizing literature like the Roman may not have been in course of formation on the Arnus and Volturnus. But all information on the point is lost, and history can in such circumstances only indicate the blank.