Peter Skarga, in his "Lives of the Saints", writes about St. Agatha, a Sicilian martyr and patroness of Catania. When the Roman governor of Sicily decided to kill the saint in the third century, the volcano Etna came to life and began to wreak havoc. The citizens of Catania took the veil of the martyr and moved towards the lava, which at that moment stopped and the eruption ceased.
St. Agatha became the patron saint of the city.