HM George I's 21-Great Grandfather. Poss. HRE Ferdinand I's 15-Great Grandfather. Poss. HRE Charles VI's 20-Great Grandfather. U.S. President [NIXON]'s 28-Great Grandfather. PM Churchill's 27-Great Grandfather. Louis XVII's 23-Great Grandfather. Poss. `Osawatomie' Brown's 24-Great Grandfather. Poss. Jamie's 27-Great Grandfather.