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
Louis II, Prince of Monaco Honor. In 1908 he returned home, leaving behind his mistress and daughter. At the outbreak of World War I, he re-enlisted in the French Army, proving to be one of the Fifth Army's most outstanding soldiers. He was made a Grand Officer of the Legion of Honor and eventually became a Brigadier General. A political crisis loomed for the Prince because without any other heir, the throne of Monaco would pass to his first cousin Wilhelm, the Duke of Urach, a German nobleman who was a son of Prince Albert's aunt, Princess Florestine of Monaco. To ensure this did not