Publia Fulvia Plautilla (c.187-211): name of a Roman princess, wife of Caracalla.
Plautilla's father's fortunes improved when his friend Septimius Severus became emperor (193) and he was promoted to praefectus vigilum (commander of Rome's watchmen) and, in 196, to praetorian prefect. He became one of the most powerful men in Rome, and our sources are generally hostile about him. Cassius Dio writes:
This is of course slander, but between the lines we can read that Plautianus made sure that his daughter was well-educated. Her marriage to the crown prince was important, not just for her father's career, but also for the emperor, who wanted to end the opposition between his family and the prefect by creating a shared interest. The wedding was scheduled for April 203, when he would celebrate his decennalia, the tenth anniversary of his coming to power. To prevent that Caracalla would marry below his rank, Plautianus - a mere equestrian - first had to receive a consulship, which he indeed obtained in January 203. The wedding took place, but the marriage was unhappy.
At home he castrated a hundred Roman citizens of noble birth. ... Nor was it boys or youths alone that he castrated, but grown men as well, some of whom had wives. His purpose was that Plautilla, his daughter, whom Caracalla afterwards married, should have only eunuchs as her attendants in general, and especially as her teachers in music and other branches of art.note[Cassius Dio, Roman History, 76.14; tr. E. Cary.]
In January 205, Plautianus was killed, and Caracalla immediately sent his wife into exile to Lipara, one of the Aeolian Islands. When he succeeded his father, in 211, one of his first acts was to send an assassin to murder his wife.