Agrippina the Elder
One of the most prominent women in the Julio-Claudian dynasty, her father was the Roman general Germanicus (one-time heir apparent to the Roman Empire under Tiberius), her mother was Agrippina the Elder (granddaughter of the first Roman emperor Augustus), she was the younger sister of emperor Caligula, niece and fourth wife of emperor Claudius (who succeeded Caligula) and the mother of emperor Nero (who succeeded Claudius).