Line of succession to the French throne (Bonapartist) sons, and it seemed unlikely that he would have any due to the age of his wife, Joséphine de Beauharnais. His eventual response was to have his marriage to Josephine annulled and to undertake a second marriage with Roman Catholic rites to Archduchess Marie Louise, daughter of Emperor Francis I of Austria. Their only child was Napoleon, King of Rome, known in exile as "Napoleon II" and as the Duke of Reichstadt. He died unmarried, thereby extinguishing the legitimate descent of Napoleon I. Meanwhile, Napoleon I's older brother, Joseph Bonaparte, recognized upon establishment of the First Empire as first in
Napoleon III Napoleon III Napoleon III (born Charles-Louis Napoléon Bonaparte; 20 April 1808 – 9 January 1873) was the Emperor of the French from 1852 to 1870 and, as Louis-Napoléon Bonaparte, the President of France from 1848 to 1852. He was the only president of the French Second Republic and the founder of the Second French Empire. The nephew and heir of Napoleon I, he was the first head of state of France to hold the title of president, the first elected by a direct popular vote and the youngest until the election of Emmanuel Macron in 2017. Barred by the Constitution