Nero, who was enthroned in Rome in 54 A.D., at the age of sixteen, and went on to rule for nearly a decade and a half, developed a reputation for tyranny, murderous cruelty, and decadence that has survived for nearly two thousand years. According to various Roman historians, he commissioned the assassination of Agrippina the Younger—his mother and sometime lover. He sought to poison her, then to have her crushed by a falling ceiling or drowned in a self-sinking boat, before ultimately having her murder disguised as a suicide. Nero was betrothed at eleven and married at fifteen, to his adoptive stepsister, Claudia Octavia, the daughter of the emperor Claudius. At the age of twenty-four, Nero divorced her, banished her, ordered her bound with her wrists slit, and had her suffocated in a steam bath. He received her decapitated head when it was delivered to his court. He also murdered his second wife, the noblewoman Poppaea Sabina, by kicking her in the belly while she was pregnant.