Paullus Aemilius Regillus[1][2][3][4] or Regulus[5] (born around 15/14 BC) was a Roman Senator and grandnephew of the emperor Augustus.
[5] His father died shortly after his birth, and his mother subsequently remarried.
Through his half-brother Marcus Valerius Messalla Barbatus, he was the uncle of the Roman Empress Valeria Messallina.
Regillus' political career was contemporaneous with the rule of the Roman emperors Augustus and Tiberius, during which he served as a quaestor.
[8] During the reign of Tiberius (14 to 37), Regillus was one of the emperor's comites,[3] an imperial legate and proconsul[3] of a Roman province.