Saint John IV (died 835), called the Peacemaker and known in Italian as Giovanni d'Acquarola, was the Bishop of Naples from an unknown date until his death. He is one of the patron saints of Naples and his feast day is 22 June. He had the relics of Aspren translated to the church of Santa Restituta in Naples. He also assisted Duke Andrew II in negotiating the Pactum Sicardi, an economic treaty, with Sicard, Prince of Benevento.
Category:835 deathsCategory:Italian saintsCategory:People from NaplesCategory:Bishops of NaplesCategory:9th-century bishopsCategory:Articles lacking sources (Erik9bot)Category:9th-century Christian saints