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
Napoleon III officially ended, replaced by the Second French Empire. Prince-President Louis-Napoleon Bonaparte became Napoleon III, Emperor of the French. His regnal name treats Napoleon II, who never actually ruled, as a true Emperor (he had been briefly recognized as emperor from 22 June to 7 July 1815). The 1852 constitution was retained; it concentrated so much power in Napoleon's hands that the only substantive change was to replace the word "president" with the word "emperor." One of the first priorities of Napoleon III was the modernization of the French economy, which had fallen far behind that of the United Kingdom and