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King Leopold III of Belgium (1901 - 1983) with his son Prince Baudouin of Belgium (1930 - 1993), circa 1950. (Photo by Keystone/Hulton Archive/Getty Images)

King Leopold III of Belgium (1901 - 1983) with his son Prince Baudouin of Belgium (1930 - 1993), circa 1950. (Photo by Keystone/Hulton Archive/Getty Images)