Cerbonius was a 6th-century bishop of Populonia who lived during the era of the Barbarian invasions. Born in North Africa, he fled to Italy alongside other clergy to escape Arian Vandal persecution. He eventually served as a bishop in Tuscany, where he was noted for his unique liturgical practices. Recognized as a thaumaturge, he is remembered for his ability to perform miracles, including the taming of wild geese and his encounter with a bear during the Ostrogothic invasion.
Life and miracles


After arriving in Tuscany, Cerbonius became the bishop of Populonia. He faced scrutiny from Pope Vigilius for celebrating mass at dawn, which led to a journey to Rome. During this trip, he reportedly healed feverish men and tamed wild geese with the sign of the cross. Later, while hiding Roman soldiers from King Totila, he was sentenced to death by a bear, but the animal instead showed him submission. Consequently, he was exiled to Elba.
Veneration

He is commemorated on October 10. Devotion to him exists in several locations, including Massa Marittima, where he is linked to a Gothic sarcophagus, and Baratti, where a dedicated chapel and fountain exist. In Baratti, a local proverb even mentions his fountain. His legacy includes being praised by Pope Gregory I for his holy life and miraculous works.
