Pionia (Mysia)

Pionia (Ancient Greek: Πιονία) or Pioniai (Πιονίαι) was a town in the interior of ancient Mysia, on the river Satnioeis, to the northwest of Antandrus, and to the northeast of Gargara.^[1] Under the Roman dominion it belonged to the jurisdiction of Adramyttium,^[2] and in the ecclesiastical notices it appears as a bishopric of the Hellespontine province.^[3] The bishop Aetius represented the city at the Council of Ephesus. No longer the seat of a residential bishop, it remains a titular see of the Roman Catholic Church.^[4]

Its site is located near Gömeniç in Asiatic Turkey.^[5][6]