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.
Georgina Fitzalan-Howard, Duchess of Norfolk Georgina Susan Fitzalan-Howard, Duchess of Norfolk (born 30 January 1962), is the wife of Edward William Fitzalan-Howard, 18th Duke of Norfolk. She was born Georgina Susan Gore, the younger daughter of John Temple ("Jack") Gore (1931-) and his first wife Serena Margaret Mounsey. Her parents divorced in 1969.