John I of Naples

John I was the duke of Naples from September 711[1] to his death, probably in 719.[2] The main source for his reign is the Chronicon ducum et principum Beneventi, Salerni, et Capuae et ducum Neapolis.

In 716, while a pestilence swept through Naples, Romuald II of Benevento occupied the castle of Cumae. Immediately, Pope Gregory II ordered him to return it and offered compensation if he would. He did not and John led an army against him in 717. As promised, the pope himself contributed 70 pounds of gold to the undertaking.

Sources
  • Caravale, Mario (ed). Dizionario Biografico degli Italiani: LV Ginammi – Giovanni da Crema. Rome, 2000.
Preceded by
Caesarius II		 Duke of Naples
711–719		 Succeeded by
Theodore I

References
  1. Charters of his reign begin new years in September.
  2. The first year in which a new duke appears.
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