Pauline (“Paulette”), Napoleon’s sister, was promiscuous..

.. as with her first marriage, she continued to have MANY extramarital affairs with the 2nd.  One of her lovers was violinist Niccolo Paganini.

She and her husband did not get along.  When her sickly son died of an illness, her husband left her, but not before Napoleon bestowed upon her the title Princess and Duchess of Guastalla.

She sold the Duchy, but kept the title.

(portraits: Paulette early 1800’s)