Cecily of York (d. 1507)
Cecily of York, Viscountess Welles (20 March 1469 – 24 August 1507) was an English princess, the third daughter of Edward IV, King of England, and his queen consort Elizabeth Woodville, daughter of Richard Woodville, 1st Earl Rivers, and Jacquetta of Luxembourg. She was First Lady of the Bedchamber to her sister, Queen Elizabeth of York, in the years 1485–1487.