HM George I's 19-Great Aunt. HRE Ferdinand I's 16-Great Aunt. HRE Charles VI's 19-Great Aunt. U.S. President [B, HARRISON]'s 25-Great Aunt. Poss. PM Churchill's 25-Great Grandmother. Poss. HM Margrethe II's 25-Great Grandmother. Poss. Agnes Harris's 24-Great Grandmother. `Osawatomie' Brown's 35-Great Aunt.