Charles Louis Napoleon Achille Murat (known as Achille, 21 January 1801 – 15 April 1847) was the eldest son of Joachim Murat, the brother-in-law of Napoleon who was appointed King of Naples during the First French Empire. After his father was deposed and executed by his own subjects, Achille Murat went into exile in the Austrian Empire with his siblings and mother. At the age of 21, Achille Murat emigrated to the United States and settled at St. Augustine, Florida, becoming a naturalized citizen sometime after July 1828 and dropping his European titles. Source: Wikipedia (en)