Poss. HM George I's 18-Great Grandfather. Poss. HRE Ferdinand I's 15-Great Grandfather. Poss. HRE Charles VI's 18-Great Grandfather. Poss. U.S. President [W. HARRISON]'s 23-Great Grandfather. Poss. PM Churchill's 26-Great Grandfather. Poss. HM Margrethe II's 25-Great Grandfather. Poss. `Osawatomie' Brown's 25-Great Grandfather. Poss. Jamie's 27-Great Grandfather.