Queen Alexandra of the United Kingdom (when Princess of Wales) riding sidesaddle, 1886

 

Prince George of Greece and Denmark, Tsarevitch Nicholas of Russia and Prince Constantine, Hereditary Prince of Greece and Denmark.

 

Nicolas II and Empress Alexandra of Russia

 

Kaiser and his great-grandson Prince Friedrich Wilhelm, born on 9 November 1939. Prince Friedrich Wilhelm

 

H.I.H. Prince Louis Napoleon Bonaparte, Prince Imperial of France (1856-1879) Prince Imperial Napoleon Eugene

 

Grand Duchess Olga Nikolaevna of Russia

 

German Empress Frederick