Vitus, Modestus, and Crescentia are three companion martyrs of the early Church, venerated together in both the Eastern Orthodox and the Western pre-schism traditions. By tradition the boy Vitus was a native of Sicily who was raised in the Christian faith by his tutor Modestus and his nurse Crescentia. The three confessed Christ together and suffered martyrdom during the persecution of the emperor Diocletian. They are commemorated on May 16 and again on June 15.
The narrative of their lives survives only in later legendary accounts, and historical records of the actual martyrdom are absent. The surviving passio is generally dated to the sixth and seventh centuries, and modern scholarship treats much of its detail as hagiographic embellishment. In the Western reform of the calendar in 1969, Modestus and Crescentia were removed from the General Roman Calendar as figures whose historicity could not be established, though the cult of all three persisted in the East and in popular Western devotion.
Of the three, Vitus became by far the most widely venerated. His cult spread across Italy and into northern Europe, carried in part by the translation of his relics, which were reported at the Abbey of Saint-Denis in the eighth century and later at Prague, where the cathedral bearing his name was dedicated to him. He came to be invoked against epilepsy and the nervous disorder later called 'Saint Vitus's Dance,' as well as for protection against snakebite and storms.
