Poss. HM George I's 16-Great Grandfather. Poss. HRE Ferdinand I's 13-Great Grandfather. Poss. HRE Charles VI's 17-Great Grandfather. Poss. U.S. President [John ADAMS]'s 19-Great Grandfather. Poss. PM Churchill's 22-Great Grandfather. Poss. HM Margrethe II's 24-Great Grandfather. Poss. `Osawatomie' Brown's 21-Great Grandfather. Poss. Jamie's 24-Great Grandfather.