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
Albert I, Prince of Monaco a special provision was made by the Vatican to allow Louis to remain legitimate in the eyes of the Church. Civilly, the marriage was dissolved on 28 July 1880 by the Order of Prince Charles III. That same year, the former Princess of Monaco remarried in Florence, Italy, to a Hungarian nobleman, Prince Tassilo Festetics von Tolna. On 10 September 1889, Albert ascended the throne of Monaco on the death of his father. That same year in Paris, on 30 October, he married the Dowager Duchess de Richelieu, née Marie Alice Heine (1858–1925). The American daughter of a New Orleans