Situated in northern Syria, on the eastern-most frontier of Latin Christendom, the principality of Antioch was a medieval polity bordered by a host of rival powers, including the Byzantine Empire, the Armenian Christians of Cilicia, the rulers of the neighbouring Islamic world and even the other crusader states, the kingdom of Jerusalem and the counties of Edessa and Tripoli. Coupled with the numerous Christian, Muslim and Jewish communities who populated the region, Antioch's Frankish settlers - initially installed into power by the military successes of the First Crusade - thus faced...