Prince Imperial of France

A few days short of nine months after the Treaty of Fontainebleau was concluded, Napoleon I, reacting to the recovery of his own popularity among the French people, Legitimists in France and diplomats at the Congress of Vienna openly calling for his further exile to the Azores or Saint Helena (or, in some cases, hinting at his assassination),[6][7] and the fact that the coalition was distracted for the moment by infighting at Vienna, returned to France from his exile in Elba, inaugurating the Hundred Days.

Reinstating the Constitution of the Year XII, Napoleon I's return to Paris caused the title of Prince Imperial of France once again to be conferred upon his son.

However, following the decisive French defeat at the Battle of Waterloo, Napoleon I, bowing to political pressure, finally abdicated in favor of his son on 22 June 1815.

[8] Soon thereafter, the House of Bourbon was restored for the second time in as many years, after the Provisional Government failed to secure concessions from the victorious coalition, conclusively ending the First French Empire.

Article 6 of the Sénatus-Consulte of 25 December 1852 was nearly a verbatim copy of the text of Article 9 of the Constitution of the Year XII, stating once again that the eldest son of the Emperor would bear the title of Prince Imperial, while the other members of the Imperial Family would bear the title of French Prince, including those that served in the military during the Franco Prussia conflict.