married Prince Henry of Prussia and introduced the gene to the German royal family. Irene's two sons also battled with hemophilia. Alice's other daughter, Alix, became Tsar Nicholas II of Russia's ...

For centuries, hemophilia was a dangerous genetic disorder with no treatment. Children with hemophilia often didn't make it to adulthood, since a bump or fall could cause massive internal bleeding.

These are pedigree branches showing transmission of putative hemophilia from Queen Victoria of England to her descendants in European royal families. This image relates to an article that appeared ...