Category
page 1European royalty with haemophilia
Alexei Nikolaevich, Tsarevich of Russia
Last Russian tsesarevich and heir apparent of the Russian Empire (1904–1918)

Prince Leopold, Duke of Albany
Member of the House of Saxe-Coburg and Gotha
Alfonso, Prince of Asturias
Crown Prince of Spain (1907–1938); heir apparent to the throne until 1933
Infante Gonzalo of Spain
(1914-1934)

Lord Leopold Mountbatten
British noble (1889-1922); son of Prince Henry of Battenberg and Princess Beatrice of the United Kingdom; grandson of Queen Victoria
Prince Waldemar of Prussia
German jurist (1889–1945)
Prince Friedrich of Hesse and by Rhine
German prince (1870–1873)

Rupert Cambridge, Viscount Trematon
British viscount
Prince Henry of Prussia
1900–1904 infant German prince (1900–1904)
Haemophilia in European royalty
preponderance of a genetic disorder