Peregrine Bertie, 3rd Duke of Ancaster and Kesteven British duke (1714-1778) (1714–1778) Parents Jane Brownlow Peregrine Bertie, 2nd Duke of Ancaster and Kesteven Children Georgina Cholmondeley, Marchioness of Cholmondeley Robert Bertie, 4th Duke of Ancaster and Kesteven Peregrine Thomas Bertie, Marquess of Lindsey Priscilla Bertie, 21st Baroness Willoughby de Eresby unknown daughter Bertie Siblings Albinia Beckford Brownlow Bertie, 5th Duke of Ancaster and Kesteven Lady Jane Bertie Lady Mary Bertie Caroline Bertie unknown daughter Bertie Partners Elizabeth Blundell Mary Bertie, Duchess of Ancaster and Kesteven
