was attached to the office of Praetorian prefect as head of the Emperor's personal guard. Strabo would not remain prefect for much longer however, but for his services to the house of Augustus he was well rewarded by Tiberius. He took up a position in the emperor's consilium, and the same year gained his own son, Lucius Aelius Sejanus, as colleague in his prefecture. Together they commanded the Praetorian Guard from 14 until 15 or 16, after which Strabo was promoted to the highest office a Roman knight could attain, governor of Egypt. The length of his governorship is unclear, nor what happened to Strabo after this appointment, but it has been suggested that he died while in office. Although Strabo distinguished himself by achieving the highest offices a Roman knight could attain under Augustus and Tiberius, his place in history has been largely overshadowed by the infamy of his son Sejanus. During a prefecture which lasted nearly 17 years, Sejanus introduced reforms to the Praetorians which helped shape the Guard into an integral and powerful branch of the Principate. The soldiers were gathered to a single garrison and the number of cohorts was increased from 9 to 12. Sejanus himself became a trusted advisor to Tiberius, and during the latter's withdrawal to Capri in 26 was effectually the ruler of the Roman Empire until 31. That year he suddenly fell from power amidst suspicions of Tiberius that Sejanus was secretly plotting against him. He was executed along with his three children. Notes References External links Tacitus, Annals, I.7, I.24, IV.1, VI.8, English translation Roman governors of Egypt Ancient Roman soldiers 1st-century BC Romans 1st-century Romans 46 BC births 16 deaths 1st-century Roman governors of Egypt Praetorian prefects Seii (Romans)