HM George I's 21-Great Grandmother. HRE Ferdinand I's 19-Great Aunt. HRE Charles VI's 22-Great Aunt. U.S. President [WASHINGTON]'s 23-Great Aunt. Poss. PM Churchill's 25-Great Grandmother. Louis XVII's 23-Great Grandmother. Poss. Agnes Harris's 19-Great Grandmother. `Osawatomie' Brown's 27-Great Aunt.