eparchos
An eparchos was a high-ranking official in the Byzantine Empire, typically serving as a provincial governor. The term originates from the Greek word "eparchos" (ἔπαρχος), meaning "commander of a place" or "governor." Eparchs were appointed by the Emperor and held significant administrative, judicial, and military authority within their assigned eparchy, which was a territorial division of the empire.
The responsibilities of an eparchos varied depending on the specific period and the eparchy they governed.