Lucius Aemilius Paullus
Livius Drusus was a member of the plebeian gens Livia. His father was born to the patrician gens Aemilia, most likely a younger brother of Lucius Aemilius Paullus Macedonicus, who was adopted by Marcus Livius Drusus Salinator. He was the father of Marcus Livius Drusus, Gaius Livius Drusus and Livia.