NAPOLEON II., emperor of the French, the style given by the Bonapartists to the son of Napoleon I., Napoleon Francis Joseph Charles, duke of Reichstadt (?..) . The fact that in 1814, by Napoleon I.'s abdication in his favour, the king of Rome (as he was then styled) became for a few days titular emperor " by the will of the people," was held 'by Prince Louis Napoleon to justify his own assumption of the style of Napoleon III. which, as seeming to involve a dynastic claim, gave such offence to the legitimist powers, notably the emperor Nicholas I. of Russia.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)