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.,When Napoleon first abdicated in 1814, at the "invitation" of Emperor Francis of Austria, the French empress, his daughter Louise, arrived at this Austrian palace with her son on May 21st. From then on, she became a crowned hostage.,From then on, until Napoleon died alone on the island in 1821, there was no more meeting between father and son, husband and wife.。