This article refers to the son of Napoleon III. For the stepson of Napoleon I, see Eugène de BeauharnaisNapoléon, Prince Imperial (full name: Napoléon Eugène Louis Jean Joseph Bonaparte, prince impérial de France; 16 March 1856 – 1 June 1879) was the only child of Emperor Napoleon III of France and his Empress consort Eugénie de Montijo. After his father was dethroned in 1870, he relocated with his family to England.