Incest of unequal gravity: the "incestus iuris gentium," which was applied to both Romans and non-Romans in the Empire, and the "incestus iuris civilis," which concerned only Roman citizens. Therefore, for example, an Egyptian could marry an aunt, but a Roman could not. Despite the act of incest being unacceptable within the Roman Empire, Roman Emperor Caligula is rumored to have had sexual relationships with all three of his sisters (Julia Livilla, Drusilla, and Agrippina the Younger). Emperor Claudius, after executing his previous wife, married his brother's daughter Agrippina the Younger, and changed the law to allow an otherwise illegal union.
Agrippina the Elder so. Despite public outcry, Agrippina and Nero were declared public enemies ("hostes") following a repeat of the accusations by the emperor. They were both exiled; Nero to Pontia where he was killed or encouraged to commit suicide in AD 31, and Agrippina to the island of Pandateria (the same place her mother was exiled to). Suetonius says that while on the island of Pandateria, she lost an eye when she was beaten by a centurion. She would remain on the island until her death in AD 33. Accounts of her death vary. She is said to have died from starvation,