HM George I's 17-Great Grandmother. Poss. HRE Ferdinand I's 11-Great Grandmother. HRE Charles VI's 17-Great Grandmother. U.S. President [HAYES]'s 18-Great Aunt. PM Churchill's 25-Great Grandmother. Lady Diana's 25-Great Grandmother. `Osawatomie' Brown's 24-Great Aunt. Jamie's 26-Great Aunt.