Unknown woman, formerly known as Margaret Pole, Countess of Salisbury from National Portrait Gallery. c1535. Margaret Pole the Blessed, Countess of Salisbury (1473 - 1541) Daughter of George, Duke of Clarence, who was the brother of King Edward IV and King Richard III. Peeress in her own right . 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 King Henry VIII, her 1st cousin, once removed. Beatified, 1886.