Year of the Four Emperors
The first "praefectus Aegypti" of Alexandrian origin was Tiberius Julius Alexander, who was governor through the Year of the Four Emperors and who eventually proclaimed the general Vespasian, victor in the Jewish War, emperor at Alexandria in July 69 AD. This prefect was himself of Hellenized Jewish descent and related to Philo of Alexandria. The importance of the Egyptian grain harvest () to Rome helped Vespasian assert control over the whole empire.