The chief bishop of an eparchy.Even in Thessaloniki, seventh-century city officials seem to have become restricted to the bishop and the local imperial representative, the eparch....
Why were eunuchs not allowed to become the city prefect (eparch) of Constantinople?
Origin
Mid 17th century (denoting the governor of an administrative division of Greece): from Greek eparkhos, from epi 'above' + arkhos 'ruler'.