He was the Agron referred to by the emperor, also the Crown Prince of the French Empire and King of Rome. He was once destined to inherit Napoleon's legacy as Napoleon II.,From then on, until Napoleon died alone on the island in 1821, there was no more meeting between father and son, husband and wife.,After arriving in Austria, on July 22, 1818, his maternal grandfather, Emperor Francis I of Austria, issued a decree cancelling his Napoleonic name and replacing it with the Germanized "Franz" as his new name; simultaneously, he revoked his titles of Roman King and all other honors, instead bestowing upon him the title of Duke of Lechstedt.。