Agrippina the Younger sources describe Agrippina's personality as ruthless, ambitious, violent, and domineering. Physically she was a beautiful and reputable woman; according to Pliny the Elder, she had a double canine in her upper right jaw, a sign of good fortune. Many ancient historians accuse Agrippina of poisoning her husband Claudius, though accounts vary. In AD 59 Agrippina was executed on the orders of her son, the emperor Nero. Agrippina was the first daughter and fourth living child of Agrippina the Elder and Germanicus. She had three elder brothers, Nero Caesar, Drusus Caesar and the future Emperor Caligula, and two younger sisters, Julia
Agrippina the Elder still survives (). Agrippina was fiercely independent, a trait she shared with her mother. Dio described her as having ambitions to match her pedigree. However, Anthony Barrett notes that Agrippina was fully aware that a woman in ancient Rome could not hold power in her own right. Instead, Agrippina followed the model of Livia in promoting the careers of her children. She and her daughter, Agrippina the Younger, are both described as being equally ambitious for their sons. Whereas the elder Agrippina's son failed to become emperor, the younger Agrippina's son, also named Nero, succeeds. In a contrast, Tacitus has