Question: Who is the maternal grandfather of Robert Bertie, 4Th Duke Of Ancaster And Kesteven?
Sentence (from "Priscilla Bertie, 21st Baroness Willoughby de Eresby"): On 8 July 1779, her brother, the 4th Duke of Ancaster and Kesteven, died of scarlet fever at the age of 22 and his dukedom passed to his uncle, but his barony of Willoughby de Eresby, as well as the office of Lord Great Chamberlain, went into abeyance between Priscilla and her sister Georgiana Charlotte, the Countess of Cholmondeley.
Relevant evidence: No