Volcanic Eruptions / Januarius, d. 304, Feast Day: September 19

A bishop martyred in nearby Pozzuoli, Januarius’ relics were moved to Naples, where a church was built to house them. A vial of his blood is preserved there. The residents of Naples traditionally
invoke the saint when they are threatened by the eruption of nearby Mount Vesuvius. The blood in the vial boils three times a year: on his feast day and on the anniversaries of successful interventions. When it does not boil, there are eruptions from the volcano.

Other patronages: Naples; blood banks; nail makers

Invoked: against the evil eye