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
National Day of Monaco National Day of Monaco The National Day of Monaco (, literally Prince's holiday) also known as The Sovereign Prince's Day is currently annually celebrated on 19 November. The date of the National day is traditionally determined by the reigning Prince. The previous Princes often chose the day of the saint they were named after. For instance the late Prince Rainier III chose 19 November, the day that celebrates St. Rainier. When Prince Albert II ascended the throne he ended this tradition by choosing the same day as his father, instead of the day of St. Albert, 15 November. The 19