Rainier III, Prince of Monaco Our Lady Immaculate, the resting place of previous sovereign princes of Monaco and several of their wives, and the place where Prince Rainier and Princess Grace had been married in 1956. Because his death occurred shortly after that of Pope John Paul II, Rainier's death was overshadowed in the media. "See also: List of titles of the Monegasque Crown" Rainier III, Prince of Monaco Rainier III (Rainier Louis Henri Maxence Bertrand Grimaldi; 31 May 1923 – 6 April 2005) ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs in European history. Though
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