Roman Emperor (Principate) Antony's daughter who was also Augustus' niece, Germanicus Julius Caesar. Germanicus married Vipsania Agrippina, Agrippa's daughter by Julia and Tiberius's stepdaughter, and had by her one surviving son, Gaius "Caligula" ("Little Boots"), and a daughter, Julia Agrippina, whose third husband was Germanicus's brother by blood, Claudius (she was his fourth wife); Agrippina had already borne a son, Lucius, whom Claudius adopted under the name Nero"' in 40; Nero married Claudius's daughter Claudia Octavia in 53. The year 69 is often called the "Year of the Four Emperors" because it saw four usurpers successively claim the purple robe. The fourth Emperor,
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