Monaco home and held in the Drancy deportation camp outside the French capital before being transported to the Auschwitz concentration camp, where he was later killed. Blum's colleague Raoul Gunsbourg, the director of the Opéra de Monte-Carlo, helped by the French Resistance, escaped arrest and fled to Switzerland. In August 1944, the Germans executed René Borghini, Joseph-Henri Lajoux and Esther Poggio, who were Resistance leaders. Rainier III, who ruled until 2005, succeeded to the throne following the death of his grandfather, Prince Louis II, in 1949. On 19 April 1956, Prince Rainier married the American actress Grace Kelly; the event was
Albert I, Prince of Monaco building contractor of German-Jewish descent, Alice Heine had married the Duc de Richelieu but had been widowed by age 21 and left with a young son, Armand. Her marriage to Prince Albert proved an equal blessing for him and the tiny principality of Monaco, since Alice brought a strong business acumen, well in advance of her youth. Having helped put her husband's principality on a sound financial footing, she would devote her energies to making Monaco one of Europe's great cultural centers, with an opera, theater, and a ballet under the direction of the famed Russian impresario Serge Diaghilev. Despite