Crown Prince Friedrich Wilhelm of Germany and Prussia (1882 - 1951), with his fiance, Duchess Cecilie of Mecklenburg-Schwerin (1886 - 1954) at the time of their engagement, 1904. (Photo by Estate of Emil Bieber/Klaus Niermann/Getty Images)
Crown Prince Friedrich Wilhelm of Germany and Prussia (1882 - 1951), with his fiance, Duchess Cecilie of Mecklenburg-Schwerin (1886 - 1954) at the time of their engagement, 1904. (Photo by Estate of Emil Bieber/Klaus Niermann/Getty Images)