Iullus Antonius also. Through his half-sister Antonia Minor, he was a maternal uncle of Germanicus, Livilla and the Emperor Claudius. Lastly, he was a paternal great-uncle of the Emperor Caligula, Julia's grandson by Agrippa, and the Empress Agrippina the Younger, Julia's eldest granddaughter, and Claudius' niece and fourth wife, as well as other children fathered by Germanicus and his wife Agrippina the Elder: Nero Julius Caesar, Drusus Caesar, Julia Drusilla, and Julia Livilla. Through Agrippina the Younger, Iullus was a maternal great-great-uncle of the Emperor Nero. Through his half-sister Antonia Major and stepsister Claudia Marcella Minor, he was also great-uncle to Claudius'
Agrippina the Younger make him emperor. Britannicus was secretly poisoned on Nero's orders during his own banquet in February 55. The power struggle between Agrippina and her son had begun. Agrippina between 55 and 58 became very watchful and had a critical eye over her son. In 55, Agrippina was forced out of the palace by her son to live in imperial residence. Nero deprived his mother of all honors and powers, and even removed her Roman and German bodyguards. Nero even threatened his mother he would abdicate the throne and would go to live on the Greek Island of Rhodes, a place