However, on 6 April 1814, Napoleon I fully abdicated and renounced not only his own rights to the French throne, but also those of his descendants. The Treaty of Fontainebleau in 1814 gave the child the right to use the title of Prince of Parma, of Piacenza, and of Guastalla, and his mother was styled the Duchess of Parma, of Piacenza, and of Guastalla.
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