Son of the Duke of Naples, Italy. Bishop of Naples at age 18. He restored the church of Saint Januarius that had been destroyed by Saracens, founded a hospice, and instituted a service for the ransom of captive Christians. Because he fought simony, he was imprisoned by his corrupt nephew Sergius, Duke of Naples; the clergy and lay people of Naples forced his release, but Athanasius was sent into permanent exile in Veroli, Italy. Confessor of the faith.
- 872 at Veroli, Italy of natural causes
- buried at Monte Cassino
- relics later translated to Naples, Italy
- Book of Saints, by the Monks of Ramsgate
- New Catholic Dictionary
- Our Sunday Visitor’s Encyclopedia of Saints