Michel Poniatowski
…half-brother) was a niece of the Emperor of France at the time of her marriage to Poniatowski, who was appointed the emperor's aide-de-camp. Their son, André Poniatowski (1864–1954) wed Stockton flour mill heiress Elizabeth Sperry in 1894. The son of that union, Prince Casimir Poniatowski (1897–1980), became the father…