a Roman eques, was commander of the praetorian troops at the latter end of the reign of Augustus and the commencement of that of Tiberius.
He was subsequently sent by the latter emperor to govern Egypt, and was then succeeded in the sole command of the praetorian troops by his son, the notorious Sejanus, who had shared with him the command from the first year of the reign of Tiberius. (Tac. Ann. 1.7
; D. C. 57.19