About John I of Naples
John I of Naples was a Byzantine aristocrat.
John I was the duke of Naples from September 711 to his death, probably in 719. 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.
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Important facts
Related people
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Frequently asked questions
Who was John I of Naples?
Byzantine Duke
When did John I of Naples die?
John I of Naples died in 719.
What was John I of Naples's occupation?
John I of Naples was an aristocrat.
What nationality was John I of Naples?
John I of Naples was Byzantine.
Sources & further reading
· Wikipedia: John I of Naples
Cite this page
APA: Biography.guide. (2026). John I of Naples. https://biography.guide/john-i-of-naples/
MLA: "John I of Naples." Biography.guide, https://biography.guide/john-i-of-naples/.
Chicago: "John I of Naples." Biography.guide. https://biography.guide/john-i-of-naples/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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