Agrippina (opera) throne, but the ceremony is interrupted by the entrance of Claudius's servant Lesbus. He announces that his master is alive ("Allegrezza! Claudio giunge!"), saved from death by Otho, the commander of the army. Otho himself confirms this and reveals that Claudius has promised him the throne as a mark of gratitude. Agrippina is frustrated, until Otho secretly confides to her that he loves the beautiful Poppaea more than he desires the throne. Agrippina, aware that Claudius also loves Poppaea, sees a new opportunity of furthering her ambitions for Nero. She goes to Poppaea and tells her, falsely, that Otho has
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