Julia Agrippina (6 November 15 – 23 March AD 59), also called Agrippina the Younger, was a Roman empress. Her father was general Germanicus, and her mother was Agrippina the Elder, a granddaughter of the first Roman emperor Augustus. She was the younger sister of emperor Caligula, the niece and fourth wife of emperor Claudius who was the emperor after Caligula, and the mother of emperor Nero, who emperor after Claudius.