Catherine Carey a biographer of Mary Boleyn, Alison Weir, claims that a young Catherine stayed overnight to entertain and distract her aunt Anne in the Tower the morning before the execution are not correct. Catherine went on to become Maid of Honour to both Anne of Cleves and Catherine Howard, the fourth and fifth wives of Henry VIII. On 26 April 1540 she married Sir Francis Knollys. Her husband was named a Knight of the Garter in 1593, although he had already been knighted in 1547. He was also Treasurer of the Royal Household. From the time of her marriage, Catherine became
Catherine Howard 1537. Margaret Douglas died in March 1578, age 63. Her grandson James Stewart became king of both Scotland and England. Other exist, mostly showing her decades after these portraits were painted. The portrait shown on this page, attributed to Hans Holbein, dated circa 1535–1540, is exhibited at the Toledo Museum of Art as "Portrait of a Lady, Probably a Member of the Cromwell Family" (1926.57). Another version of the portrait, now located at Hever Castle, dating from the 16th century, is exhibited as Queen Catherine Howard. The National Portrait Gallery exhibits a similar painting, "Unknown Woman, Formerly Known as Catherine