His natural paternal aunt was Scribonia, the second wife of Augustus, as a consequence of which he was a maternal first cousin of Julia the Elder.
He is believed to have been adopted by Marcus Livius Drusus Claudianus,[2][3] the father of Livia Drusilla, who was the third wife of Augustus.
filiation attested in Book 54 of the Roman History of Cassius Dio,[4] it is believed that his adoption was only testamentary[5] (whereby the adoptee is permitted to use, and therefore carry on, the name of the adoptor).
[6] The career of Marcus Livius Drusus Libo is largely unknown, except that he was ordinary consul in 15 BC with Lucius Calpurnius Piso.
[10] Livia Medullina Camilla, whom Claudius was intended to marry in AD 8, but who died on the day of their wedding, is assumed to be Libo's granddaughter, based on her name.