sentences:  The fact that the ancient cathedral (now the "Abbazia Fiesolana") stands outside the city is an indication that the Christian origins of Fiesole date from after the period of the persecutions.The earliest mention of a bishop of Fiesole comes at the end of the 5th century, in a letter of Pope Gelasius I (492–496), though the name of the bishop is not given.A half-century later, under Pope Vigilius (537–555), a Bishop Rusticus is mentioned as papal legate at one of the councils of Constantinople.