Julia the Elder Adoptive - Gaius Caesar , Lucius Caesar , Agrippa Postumus , Tiberius Tiberius Children Natural - Julius Caesar Drusus Adoptive - Germanicus Caligula Children Natural - Julia Drusilla Adoptive - Tiberius Gemellus Claudius Children Natural - Claudia Antonia , Claudia Octavia , Britannicus Adoptive - Nero Nero Children