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 Younger to so "abominable a son." After Agrippina's death, Nero viewed her corpse and commented how beautiful she was, according to some. Her body was cremated that night on a dining couch. At his mother's funeral, Nero was witless, speechless and rather scared. When the news spread that Agrippina had died, the Roman army, senate and various people sent him letters of congratulations that he had been saved from his mother's plots. During the remainder of Nero's reign, Agrippina's grave was not covered or enclosed. Her household later on gave her a modest tomb in Misenum. Nero would have his mother's