The Orias Province existed somewhere within the jurisdiction of the Romulan Star Empire.
History and specifics[]
During her tenure as a member of the Imperial Senate, Ariennye T'Galatheon represented the Orias Province as its senator, a fact that was later noted in the file that Starfleet Intelligence kept on her, which claimed that the subject of their report had held the office for over four years. (ST - Glass and Bone comic: "Part 2")