The Caladarian Empire, also known as the Empire of Caladaria or simply as Caladaria, and, more rarely, as the Alexandrian Empire, was a major Orthodox Middle Eastern and Balkans power during the later Middle Ages and the early modern era. The empire's last name comes from its founder Alexander I of Caladaria (1302-1326), a prince of the Crusader Principality of Acre, the last remnant of the Crusader Kingdom of Jerusalem, who fled from the Fall of Acre in 1291 and went on to seize the throne of Trebizond and conquer the region of Caladaria from the Ill-Khan Empire. At the height of its power in the late 16th century, during the reign of Aurelia I the Great of Caladaria (1556-1603), the Caladarian Empire extended from the Adriatic Sea in the Balkans across the Middle East to the Indus and Hy