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 II wishes. Napoleon II was residing in Austria with his mother and was probably not aware at the time that he had been proclaimed Emperor on his father's abdication. The next Bonaparte to ascend the throne of France, in 1852, would be Louis-Napoleon, the son of Napoleon's brother Louis I, King of Holland. He took the regnal name of Napoleon III. From the spring of 1814 onwards, the young Napoleon lived in Austria and was known as "Franz", his second given name. In 1818, he was awarded the title of Duke of Reichstadt by his maternal grandfather, Emperor Francis. He was