 He was possibly the son of consul Lucius Aemilius Paullus.If so, he was also great-grandson of Lucius Aemilius Lepidus Paullus (consul of 50 BC and brother of the triumvir Marcus Aemilius Lepidus), and through his mother Julia the Younger, Lepidus was the great grandson of Emperor Augustus.Lepidus married Caligula's sister Drusilla sometime in November or December of 37.