bolshevik diphtheria edward vii of the united kingdom haemophilia house of bourbon infanta beatriz of spain infanta maria cristina of spain infante gonzalo of spain lady may abel smith mutation nicholas ii of russia otma prince friedrich of hesse and by rhine prince maurice of battenberg princess alice of battenberg princess alice of the united kingdom princess beatrice of the united kingdom princess feodora of leiningen princess helena of the united kingdom princess irene of hesse and by rhine princess margarita of greece and denmark princess sibilla of luxembourg princess victoria of hesse and by rhine princess victoria of saxe-coburg-saalfeld tonsillectomy victoria eugenie of battenberg victoria of the united kingdom world war i x chromosome