Tradition
St. Jerome
De Viris Illustribus (Illustrious Men)
Chapter 44
Bacchylus, bishop of Corinth, was held in renown under the same emperor Severus, and wrote, as representative of all the bishops who were in Achaia, an elegant work On the passover.
Source: De Viris Illustribus (Illustrious Men) (New Advent)