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 I on His Imperial Throne developments." The Louvre, newly filled with booty seized by Napoleon in his campaigns in Belgium, the Netherlands, and Italy, provided French artists of the early nineteenth century with an unprecedented opportunity to study, compare, and copy masterworks from antiquity and from the entire history of European painting. From the beginning of his career, Ingres freely borrowed from earlier art, adopting the historical style appropriate to his subject, leading critics to charge him with plundering the past. Napoleon I on His Imperial Throne Napoleon I on his Imperial Throne () is an 1806 portrait of Napoleon I of France in his