Caroline Goodall as Cecily Neville, Duchess of York, the Queen's paternal grandmother. Goodall is the only actor appearing in both The White Queen and The White Princess. Amy Manson as Catherine "Cathy" Gordon, wife of Richard of York Adrian Rawlins as John de la Pole, Duke of Suffolk, husband of Eliza de la Pole Vincent Regan as Jasper Tudor, the King's uncle Suki Waterhouse as Cecily of York, the Queen's sister Joanne Whalley as Margaret, Duchess of Burgundy, the Queen's paternal aunt Andrew Whipp as Sir Richard Pole, husband of Maggie Plantagenet