Margaret of York
Margaret of York also by marriage known as Margaret of Burgundy was Duchess of Burgundy as the third wife of Charles the Bold and acted as a protector of the Duchy after his death. She was a daughter of Richard Plantagenet, 3rd Duke of York, and Cecily Neville, and the sister of two Kings of England, Edward IV and Richard III. She was born at Fotheringhay Castle, Northamptonshire, England, and she died at Mechelen in the Low Countries.
NA
Source: Wikipedia