Pontine Islands politically troubling citizens. Some two thousands years later the islands were used for the same reason by the Fascist regime. Agrippina the Younger, mother to the future Roman emperor, Nero, was exiled to the Pontine Islands by her brother, the then Roman emperor, Caligula, in 39 AD, before having the exile lifted by her uncle, the emperor Claudius upon his succession. Deposed Pope Saint Silverius was exiled here in 537 where he would die soon afterwards. The Pontine were abandoned during the Middle Ages due to constant raids by Saracens and pirates. During the 18th century, the Kingdom of Naples
Roman emperor to style themselves as Emperor of the Romans (later βασιλεύς Ῥωμαίων in Greek), but are often referred to in modern scholarship as Byzantine emperors. Constantine XI Palaiologos was the last Roman emperor in Constantinople, dying in the Fall of Constantinople to the Ottomans in 1453. The "Byzantine" emperors from Heraclius in 629 and onwards adopted the title of "basileus" (), which had originally meant "king" in Greek but became a title reserved solely for the Roman emperor and the ruler of the Sasanian Empire. Other kings were then referred to as "rēgas". In addition to their pontifical office, some emperors