Regulus was the son of
Publius Memmius Regulus, consul
suffectus in AD 31. His grandfather, Publius Memmius Regulus, had married a woman from
Ruscino, in the
province of
Gallia Narbonensis. Although the year of his birth is uncertain, Regulus was born during the second half of the reign of the
emperor Tiberius. His father was governor of
Achaea in AD 35, and both father and son were honored with various statues. ==Political career==