HM George I's 21-Great Grandfather. Poss. HRE Ferdinand I's 19-Great Grandfather. HRE Charles VI's 26-Great Grandfather. U.S. President [HAYES]'s 21-Great Grandfather. PM Churchill's 27-Great Grandfather. Lady Diana's 25-Great Grandfather. Poss. Agnes Harris's 21-Great Grandfather. `Osawatomie' Brown's 28-Great Grandfather.