HM George I's 15-Great Grandfather. HRE Ferdinand I's 11-Great Grandfather. U.S. President [WASHINGTON]'s 18-Great Grandfather. PM Churchill's 22-Great Grandfather. HM Margrethe II's 22-Great Grandfather. Gen. Pierpont Hamilton's 24-Great Grandfather. Wm. von Bismarck's 20-Great Grandfather. `Red Baron' Richthofen's 20-Great Grandfather. Poss. Agnes Harris's 17-Great Grandfather. `Osawatomie' Brown's 25-Great Grandfather.