Duchy of Naples

The Duchy of Naples was a Byzantine province in Southern Europe, constituted in the seventh century in lands not conquered by the Lombards. Governed by a military commander, it rapidly became a de facto independent state. It was one of the Tyrrhenian duchies, alongside Gaeta, Amalfi, and Sorrento, which later gained independence from Naples. The Duchy of Naples lasted for over five centuries during the Early and High Middle Ages, dissolving in 1137 CE.