Duchy of Naples

Duchy of Naples
Ducatus Neapolitanus (Latin)
661–1137
Map of southern Italy, showing the Duchy of Naples, c. 1112
StatusDuchy
CapitalNaples
Common languagesLatin
Byzantine Greek
Duke 
• 661–666
Basil (first)
• 1123–1137
Sergius VII (last)
Historical eraMiddle Ages
• Established
661
• Sergius I make the duchy hereditary
850
• Annexation to the Kingdom of Sicily in the hands of Roger II of Sicily
1137
Preceded by
Succeeded by
Byzantine Empire
Kingdom of Sicily
Today part ofItaly

The Duchy of Naples (Latin: Ducatus Neapolitanus, Neapolitan: Ducato di Napule) began as a Byzantine province in Southern Europe that was constituted in the seventh century, in the lands roughly corresponding to the current province of Naples that the Lombards had not conquered during their invasion of Italy in the sixth century. It was one of the tyrrhenian duchies along with the duchy of Gaeta, Amalfi and Sorrento which took their independence from Naples in the early 9th century.

It was governed by a military commander (dux), and rapidly became a de facto independent state, lasting more than five centuries during the Early and High Middle Ages. Naples remains a significant metropolitan city in present-day Italy.