1906: (Wilhelm) Eitel-Friedrich Hohenzollern, (1883 - 1942), Prince Eitel-Friedrich of Prussia, son of Kaiser Wilhelm II, with his bride, Princess Sophia Charlotte of Oldenburg. (Photo by Hulton Archive/Getty Images)

1906:  (Wilhelm) Eitel-Friedrich Hohenzollern, (1883 - 1942), Prince Eitel-Friedrich of Prussia, son of Kaiser Wilhelm II, with his bride, Princess Sophia Charlotte of Oldenburg.  (Photo by Hulton Archive/Getty Images)