Monaco succession crisis of 1918 of this event, pursuant to the clauses of the treaty of 17 July 1918." The French government at the time was still the Vichy regime. Louis II died on 9 May 1949. The Principality of Monaco passed to his grandson, Rainier III. In the absence of an heir male, the ducal titles of Valentinois and Estouteville became extinct in French nobiliary law. Before Rainier III married Grace Kelly in April 1956, he notified the French government of his plans; the French ministry of foreign affairs replied with a message of official congratulations. Count Louis de Causans is suing the French
Florestan I, Prince of Monaco by the French Revolution of 1848, the towns of Menton and Roquebrune revolted and declared themselves independent. Worse, the King of Sardinia garrisoned Menton, Florestan was dethroned, arrested, and imprisoned. Florestan was restored to the throne in 1849, but Menton and Roquebrune were lost forever. Despite his good intentions, by the time of Florestan's death in Paris in 1856, Monaco was a country divided with few prospects for financial prosperity. It remained for his heir to remedy the situation. Florestan I, Prince of Monaco Florestan I, Prince of Monaco (10 October 1785 in Paris – 20 June 1856) was Prince