On his deathbed, Antoninus spoke of nothing but the state and the foreign kings who had wronged him. One of those kings, Vologases IV of Parthia, made his move in late summer or early autumn 161. Vologases entered the Kingdom of Armenia (then a Roman client state), expelled its king and installed his own – Pacorus, an Arsacid like himself. The governor of Cappadocia, the frontline in all Armenian conflicts, was Marcus Sedatius Severianus, a Gaul with much experience in military matters.