HM George I's 22-Great Grandfather. HRE Ferdinand I's 19-Great Grandfather. U.S. President [B, HARRISON]'s 28-Great Grandfather. Wm. von Bismarck's 27-Great Grandfather. `Red Baron' Richthofen's 28-Great Grandfather. Poss. Agnes Harris's 22-Great Grandfather. `Osawatomie' Brown's 37-Great Grandfather.