HM George I's 10-Great Half-Aunt. HRE Ferdinand I's 6-Great Half-Aunt. HRE Charles VI's 11-Great Half-Aunt. U.S. President [L.B. JOHNSON]'s 20-Great Half-Aunt. PM Churchill's 19-Great Half-Aunt. HRH Albert II's 19-Great Grandmother. Philippe of Belgium's 16-Great Grandmother. Grand Duke Henri's 16-Great Grandmother. Poss. Jamie's 21-Great Aunt.