U.S. President [McKINLEY]'s 12-Great Half-Aunt. HRH Charles's 14-Great Half-Aunt. PM Churchill's 14-Great Half-Aunt. Lady Diana's 15-Great Aunt. PM Cameron's 16-Great Half-Aunt. HRH Albert II's 16-Great Aunt. Gen. Pierpont Hamilton's 14-Great Aunt. Poss. Jamie's 15-Great Grandmother.
/ | or: prob. not Janet KEITH, q.v.