“ SEJANUS, LUCIUS AELIUS, favourite and minister of the Emperor Tiberius. He was the son of Seïus Strabo, prefect of the praetorians, and was adopted into the Aeolian gens. After his father's departure from Rome to take up the governorship of Egypt, Sejanus was made into prefect in his stead. He gained the confidence of Tiberius, and, supported by the praetorians, whom he concentrated in a camp on the Viminal Hill, became virtually ruler of Rome. ”