Theoctistus of Naples
Theoctistus was the Duke of Naples during a very confused period in her history. His reign began sometime around 818
Year 818 was a common year starting on Friday of the Julian calendar.-Europe:* Al-Andalus: Grave rebellion in the suburbs of Cordoba against the Umayyads.- Religion :...

 and lasted until 821
Year 821 was a common year starting on Tuesday of the Julian calendar.- Asia :* Tang Mu Zong becomes emperor of China.* First recorded session of the Parliament of Croatia- Byzantine Empire :...


On the death of Anthimus
Anthimus of Naples
Anthimus or Anthemus was the Duke of Naples for from 801 until around 818, when the patrician of Sicily reestablished Byzantine control over the ducatus...

, a war of succession broke out in Naples on account of the number of pretenders to the ducal throne. Anthimus had not given his consent to the nobility to elect his successor and so Naples was left without a de jure
De jure
De jure is an expression that means "concerning law", as contrasted with de facto, which means "concerning fact".De jure = 'Legally', De facto = 'In fact'....

duke on his death. The populace, seeing the uncertainty of the aristocracy, in a coup d'état
Coup d'état
A coup d'état state, literally: strike/blow of state)—also known as a coup, putsch, and overthrow—is the sudden, extrajudicial deposition of a government, usually by a small group of the existing state establishment—typically the military—to replace the deposed government with another body; either...

, invaded the Praetorium
- Etemology :The praetorium, also spelled prœtorium or pretorium, was originally used to identify the general’s tent within a Roman Castra, Castellum, or encampment. The word originates from the name of the chief Roman magistrate, known as Praetor...

 with the support of the upper strata of the military hierarchy, and constrained their rulers to send a delegation to Sicily
Sicily is a region of Italy, and is the largest island in the Mediterranean Sea. Along with the surrounding minor islands, it constitutes an autonomous region of Italy, the Regione Autonoma Siciliana Sicily has a rich and unique culture, especially with regard to the arts, music, literature,...

 to solicit a new duke from the patrician there, who had authority over the Ducatus Neapolitanus.

With the appointment of Theoctistus to the vacant post, Naples was once again brought under Byzantine
Byzantine Empire
The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

 influence. Theoctistus was a military man at heart and he opened up a period of wars for the duchy. Nevertheless, he was replaced by another duke from Sicily, Theodore II, who arrived in Naples in 821.


  • Schipa, Michelangelo. Storia del Ducato Napolitano. Napoli, 1895.
  • Cassandro, Giovanni. Il Ducato bizantino in Storia di Napoli Vol I. Napoli, 1975.
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