Lucius Aelius Sejanus
(d. 31 AD) was a praetorian prefect
of the Roman Empire,
and for a time the most influential citizen of Rome.
Sejanus was appointed praetorian prefect on the accession of Tiberius,
as the colleague of his father L. Seius Strabo. On his father's appointment
to the governorship of Egypt,
he became sole commander of the Praetorian
Guard, and began to increase his power. After the death of Tiberius' son
Drusus in 23, he
advertisement
consolidated his power over the Senate. Despite failing in an attempt to marry
Drusus' widow in 25, which would
make him part of the ruling house, he increased his power further upon Tiberius'
retirement to Capri in 27.
In 31, when he gained the consulship,
Sejanus felt his position was unassailable, and plotted to seize the purple
for himself. Tiberius discovered the plot and had him executed. Macro
succeeded him as commander of the Praetorian Guard.
Reference
Sejanus' fall from power is recounted in detail by Roman historians, particularly Gaius Cornelius Tacitus.
