John IV of Naples

Saint John IV of Naples, called "the Peacemaker" or "the Scribe", was bishop of Naples in Italy and is honoured as one of the patrons of the city. The Orthodox calendar gives his repose in the year 835, while the English Wikipedia shows him as bishop from 26 February 842 until his death on 17 December 849, and also gives him the name John the Serene; the sources do not agree on the years.

According to that account he moved the relics of Aspren to a chapel in the church of Santa Restituta in Naples and assisted Duke Andrew II in negotiating with Sicard, prince of Benevento, the Pactum Sicardi, an economic treaty. He was canonised after his death. He is commemorated on 22 June as a saint of the West before the Great Schism (a saint of the undivided Church), by the New Calendar.