HM George I's 15-Great Grandmother. HRE Ferdinand I's 11-Great Grandmother. U.S. President [WASHINGTON]'s 18-Great Grandmother. PM Churchill's 22-Great Grandmother. HM Margrethe II's 22-Great Grandmother. Gen. Pierpont Hamilton's 23-Great Grandmother. Wm. von Bismarck's 21-Great Grandmother. `Red Baron' Richthofen's 21-Great Grandmother. Poss. Agnes Harris's 19-Great Grandmother. `Osawatomie' Brown's 22-Great Grandmother.