Livilla de Cn. Pisone patre" indicates that she was held in the highest esteem by her uncle and father-in-law, Tiberius, and by her grandmother Livia Drusilla. According to Tacitus, she felt resentment and jealousy against her sister-in-law Agrippina the Elder, the wife of her brother Germanicus, to whom she was unfavourably compared. Indeed, Agrippina fared much better in producing imperial heirs to the household (being the mother of the Emperor Caligula and Agrippina the Younger) and was much more popular. Suetonius reports that she despised her younger brother Claudius; having heard he would one day become Emperor, she deplored publicly such
Roman emperor of the Romans"). They had also ceased to use Latin as the language of state after Emperor Heraclius (d. 641 AD). Historians have customarily treated the state of these later Eastern emperors under the name "Byzantine Empire". It is important to note, however, that the adjective "Byzantine", although historically used by Eastern Roman authors in a metonymic sense, was never an official term. Constantine XI Palaiologos was the last reigning Roman emperor. A member of the Palaiologos dynasty, he ruled the remnant of the Eastern Roman Empire from 1449 until his death in 1453 defending its capital Constantinople. He was