Feast: June 15
According to the legend, martyrs under Diocletian; feast, 15 June. The earliest testimony for their veneration is offered by the "Martyrologium Hieronymianum" (ed. De Rossi-Duchesne, 78: "In Sicilia, Viti, Modesti et Crescentiae"). The fact that the note is in the three most important manuscripts proves that it was also in the common exemplar of these, which appeared in the fifth century. The same Martyrologium has under the same day another Vitus at the head of a list of nine martyrs, with the statement of the place, "In Lucania", that is, in the Roman province of that name in Southern Italy between the Tuscan Sea and the Gulf of Taranto. It is easily possible that the same martyr Vitus in both cases, because only the name of a territory is given, not of a city, as the place where the martyr was venerated. This testimony to the public veneration of the three saints in the fifth century proves positively that they are historical martyrs. There are, nevertheless, no historical accounts of them, nor of the time or the details of their martyrdom. During the sixth and seventh centuries a purely legendary narrative of their martyrdom appeared which was based upon other legends, especially on the legend of Poitus, and ornamented with accounts of fantastic miracles. It still exists in various versions, but has no historical value.