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
Honoré II, Prince of Monaco allowed the country to be occupied by Spanish troops in 1605. The inhabitants of Monaco were prohibited to carry arms and the Prince and his two sisters were moved to Milan. The "Council of Monaco" tried to limit Spanish power but the occupation lasted until 1614, and a strong Spanish influence remained until 1633, when it recognized Honoré as a sovereign prince. From adulthood, Honoré started to criticize Spain and turned to France for support. Louis XIII gave him the support he needed and this resulted in the Treaty of Péronne. This ended Spanish rule and put Monaco under French