de Longjumeau, Baron de Massy, Marquis de Guiscard; the 31st hereditary ruler of the principality of Monaco since the death of the 30th, his grandfather Louis II [12 Jul 1870 – 09 May 1949]. Born Rainier -Louis-Henri-Maxence-Bertrand de Grimaldi, on 31 May 1923, Rainier III {no relation to Mount Rainier, which George