Which monarchy had this English peeress executed whose adult life is depicted in the 2014 historical novel The King's Curse?
The King's Curse: The King's Curse is a 2014 historical novel by Philippa Gregory, part of her series "The Cousins' War". The King's Curse:  A direct sequel to "The White Princess", it follows the adult life of Margaret Pole, Countess of Salisbury, the daughter of George Plantagenet, 1st Duke of Clarence and Isabel Neville. Margaret Pole, Countess of Salisbury: Margaret Pole, Countess of Salisbury (14 August 1473 – 27 May 1541), was an English peeress. Margaret Pole, Countess of Salisbury:  One of the few surviving members of the Plantagenet dynasty after the Wars of the Roses, she was executed in 1541 at the command of Henry VIII, who was the son of her first cousin Elizabeth of York.
Henry VIII