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
Prince's Palace of Monaco Juliette Louvet, by whom he had a daughter, Charlotte Louise Juliette, born in Algeria in 1898. As Prince of Monaco, Louis II spent much time elsewhere, preferring to live on the family estate of Le Marchais close to Paris. In 1911 Prince Louis had a law passed legitimising his daughter so that she could inherit the throne, in order to prevent its passing to a distant German branch of the family. The law was challenged and developed into what became known as Monaco succession crisis. Finally in 1919 the prince formally adopted his illegitimate daughter Charlotte, who became known as