Napoleon II Napoleon II Napoléon François Charles Joseph Bonaparte (20 March 181122 July 1832), Prince Imperial, King of Rome, known in the Austrian court as Franz from 1814 onward, Duke of Reichstadt from 1818, was the son of Napoleon I, Emperor of the French, and his second wife, Archduchess Marie Louise of Austria. By Title III, article 9 of the French Constitution of the time, he was Prince Imperial, but he was also known from birth as the King of Rome, which Napoleon I declared was the courtesy title of the heir apparent. His nickname of L'Aiglon ("the Eaglet") was awarded posthumously
Titles and styles of Napoleon Titles and styles of Napoleon Napoleon, a French military and political leader who rose to prominence during the French Revolution, was bestowed many titles and honours. His Imperial Majesty Napoleon I, By the Grace of God and the Constitutions of the Republic, Emperor of the French, Mediator of the Swiss Confederation. His Imperial and Royal Majesty Napoleon I, By the Grace of God and the Constitutions of the Republic, Emperor of the French, King of Italy, Mediator of the Swiss Confederation. His Imperial and Royal Majesty Napoleon I, By the Grace of God and the Constitutions of the Republic, Emperor