Antonia Minor Caligula, Agrippina the Younger, Julia Drusilla, Julia Livilla and later Claudia Antonia, Claudius's daughter through his second wife Aelia Paetina, her younger grandchildren. She outlived her husband, her oldest son, her daughter and several of her grandchildren. In 31 AD, Antonia exposed a plot by her daughter Livilla and Tiberius’ notorious Praetorian prefect, Sejanus, to murder the Emperor Tiberius and Caligula and to seize the throne for themselves. Livilla had allegedly poisoned her husband, Tiberius' son, Drusus Julius Caesar (nicknamed "Castor") to remove him as a rival. Sejanus was executed on Tiberius’ orders, and Livilla was handed over to her
Vipsania Marcella Vipsania Marcella Vipsania Marcella Agrippina or Marcellina or Vipsania Tertia (born 27 BC or later) was perhaps the only daughter of Roman statesman Marcus Vipsanius Agrippa by his second wife Claudia Marcella Major. If so, she was the first grandchild to Octavia Minor and first great-niece to Roman Emperor Augustus. If she truly had the name Marcella, there is no way that she was a daughter of Agrippa's first wife, Caecilia Attica. She and her elder sister Vipsania Agrippina were married off to Quintus Haterius (cos. 5 BC), Publius Quinctilius Varus (cos. 13 BC) and Tiberius (also cos. 13 BC)