Lucius Antonius (20 BC – AD 25) was the son of Iullus Antonius (son of Mark Antony) and Claudia Marcella Major (niece of emperor Augustus).
From his mother’s earlier marriage to Marcus Vipsanius Agrippa he had two older attested siblings, two half-sisters named Vipsania Marcella and Vipsania Marcellina.
[8] In 2 BC his father was charged with adultery with Julia (daughter of Augustus) and was forced to commit suicide.
G. V. Sumner proposed that Lucius may have been a progenitor of a Junius Blaesus who was descended from Marcus Antonius.
[9] A boy on the Ara Pacis has been identified by some to possibly be Lucius.