The Romans borrowed most of their official pantheon from the Greeks–but the Roman canon of gods was large & diverse: other deities great and small sneaked in from a variety of non-Greek cultural traditions (like Charun the blue hammer-wielding Etruscan god of death or mighty Hecate, goddess of witchcraft, night, and the crossroads). Angitia was a goddess of serpents, snake-charming, magic, and healing among the Marsi, a Latin tribe who lived in the mountainous region of Italy which is today known as Abruzzo. The Marsi (whom I keep miswriting as Martians) were integrated into the original Roman alliance early on in Roman history and their language and culture was quickly subsumed by the growing republic, but Angitia survived in her original form through the long centuries of Roman hegemony. A great temple was built for her on the shores of Lake Fucinus (a large lake drained in the 19th century).
Although there is evidence that Angitia was originally a local goddess, the Romans found was to Hellenize her, and writers identified her as a granddaughter of the sun (and sister of the golden-eyed Cretan sorceresses Medea and Circe). Some later sources even equate her directly to Medea, who after all vanished in a serpent-drawn flying chariot after poisoning her children with Jason and Jason’s younger trophy wife.
In classical antiquity, serpents were strongly associated with healing magic—and this became a particular specialty of the serpent-goddess Angitia. She was reputedly able to cure sickness and poisoning—particularly snakebite. Snakes obeyed her whims and she possessed power of life and death over them by merely speaking a word. The lands which had originally been inhabited by the Marsi also acquired a magical reputation and were alleged to be the haunt of witches, sorcerers, and supernatural beings.
Even when the Roman Empire eventually blew apart and was replaced by Christian kingdoms and city-states, the worship of Angitia did not wholly vanish. Throughout the middle ages, Abruzzo was the site of “the Feast of the Serpari” a spring festival dedicated to snakes. Serpent charmers would collect local snakes in order to perform great tricks and shows while healers assuaged pains and illnesses. A statue of San Domenico was draped with snakes and carried through the region in a great procession, after which the snakes were cooked and eaten (although in today’s festival they are replaced with snake-shape confections and sinuous breads).