- 4th great grandfather of Juan Urdangarín Borbón, Pablo Urdangarín Borbón, Miguel Urdangarín Borbón, Felipe Juan Froilán de Marichalar y Borbón, and Victoria Federica de Marichalar y Borbón.
- Great-great grandfather of Prinz Louis Ferdinand Junior von Preussen, Friedrich Wilhelm Prinz von Preußen, Prinz Michael von Preussen, Sofía de Grecia, King Constantine II, and Princess Irene of Greece.
- Son-in-law of Queen Victoria and Prince Albert.
- Great-grandfather of Prinz Louis Ferdinand von Preussen.
- Was German Emperor and King of Prussia for just 99 days (March 9, 1888 - June 15, 1888).
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