Iullus Antonius

Iullus Antonius (43 BC – 2 BC), also known as Iulus, Julus or Jullus, was the second son of Mark Antony and his third wife Fulvia. He is best known for being the famous lover of Julia the Elder. He was the full brother of Marcus Antonius Antyllus, half-brother of Clodia Pulchra (first wife of Augustus through his mother's first marriage), Antonia Major and half-brother of Antonia Minor through his father's marriage to Octavia Minor and Alexander Helios, Cleopatra Selene II and Ptolemy Philadelphus through his father's marriage to Cleopatra. His stepsiblings were Marcellus, Claudia Marcella Major (later his wife), Caesarion and Claudia Marcella Minor, and stepson to Octavia Minor (sister of Augustus) and Cleopatra VII.

Read more about Iullus Antonius:  Ancestry, Iullus in Popular Culture