Prince Henry of Battenberg, formerly Count Henry of Battenberg, was a morganatic descendant of the Grand Ducal House of Hesse. He became a member of the British royal family by marriage to Princess Beatrice of the United Kingdom, the youngest child of Queen Victoria. Through his daughter, Victoria Eugenie, who became the queen consort of Spain, Henry is a direct ancestor of the current Spanish royal family.

Princess Beatrice, later Princess Henry of Battenberg, was the fifth daughter and youngest child of Queen Victoria and Prince Albert. Beatrice was also the last of Queen Victoria's children to die, nearly 66 years after the first, her elder sister Alice.