Question: Who is Priscilla Bertie, 21St Baroness Willoughby De Eresby's maternal grandfather?
Sentence (from "Mary Bertie, Duchess of Ancaster and Kesteven"): Mary Bertie, Duchess of Ancaster and Kesteven (died 19 October 1793), formerly Mary Panton, was the second wife of Peregrine Bertie, 3rd Duke of Ancaster and Kesteven.
Relevant evidence: No