Margaret would be the last princess born to a reigning English monarch until the birth of  who's wife?
Margaret, Countess of Pembroke Margaret of England (20 July 1346 – October/December 1361) was a royal princess born in Windsor, the daughter of King Edward III of England and his consort, Philippa of Hainault. Margaret would be the last princess born to a reigning English monarch for over a century, until the birth of Elizabeth of York in 1466. She was also known as Margaret of Windsor.
Princess Sophie of Sweden Princess Sophie of Sweden (Sofia Vilhelmina Katarina Maria Lovisa Charlotta Anna; 21 May 1801 – 6 July 1865) was, by marriage, Grand Duchess of Baden as the wife of sovereign Grand Duke of Baden, Leopold.