Sometime between 330 and 350 AD (likely ), the Roman province of
Euphratensis was created out of the territory of
Coele Syria along the western bank of the
Euphrates. It included the territories of
Commagene and
Cyrrhestice. Its capital was
Cyrrus or perhaps
Hierapolis Bambyce. It remained within the Byzantine Empire following the 395 division of the empire by
Theodosius I. The province is listed in the
Laterculus Veronensis from around 314. The Roman Catholic and Orthodox saints
Sergius and Bacchus were supposedly martyred in the city of
Resafa in Euphratensis, and the city was later renamed Sergiopolis. Other cities in the province were
Samosata and
Zeugma. == References ==