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search Lucius Aelius Sejanus Sejanus Tiberius As.jpg Roman As
depicting Tiberius, struck in 31, Augusta Bilbilis. The reverse
reads Augusta Bilbilis Ti(berius) Caesar L(ucius) Aelio Seiano,
marking the consulship of Sejanus in that year. Born 3 June 20
BC Volsinii, Etruria Died 18 October 31 AD Allegiance Roman
Empire Years of service 14 AD – AD 31 Rank Praetorian prefect
Commands held Praetorian Guard Other work Consul of the Roman
Empire in 31  Lucius Aelius Seianus (20 BC – October 18, AD 31),
commonly known as Sejanus, was an ambitious soldier, friend and
confidant of the Roman Emperor Tiberius. An equestrian by birth,
Sejanus rose to power as prefect of the Roman imperial
bodyguard, known as the Praetorian Guard, of which he was
commander from AD 14 until his death in AD 31.  While the
Praetorian Guard was formally established under Emperor
Augustus, Sejanus introduced a number of reforms which saw the
unit evolve beyond a mere bodyguard, into a