Poss. HM George I's 23-Great Grandfather. Poss. HRE Ferdinand I's 20-Great Grandfather. Poss. HRE Charles VI's 24-Great Grandfather. Poss. U.S. President [MADISON]'s 26-Great Grandfather. PM Churchill's 33-Great Uncle. Poss. Agnes Harris's 24-Great Grandfather. Poss. `Osawatomie' Brown's 28-Great Grandfather.