Margaret Gascoigne (born c. 1447) was an English Noblewoman, the daughter of Henry Percy, 3rd Earl of Northumberland

Henry Percy, 3rd Earl of Northumberland

Henry Percy, 3rd Earl of Northumberland was the son of Henry Percy, 2nd Earl of Northumberland and Lady Eleanor Neville, daughter of Ralph Neville, 1st Earl of Westmorland and his second wife Joan Beaufort.-Family:...

 and Eleanor Poynings.

She married Sir William Gascoigne, "the Younger", son of Sir William Gascoigne

William Gascoigne

Sir William Gascoigne Kt. was Chief Justice of England during the reign of King Henry IV. Sir William Gascoigne was born in Gawthorpe W-Riding, Yorks. In 1369, William married Elizabeth de Mowbray...

 and wife. Their daughter Agnes (or Anne) Gascoigne

Anne Gascoigne

Anne Gascoigne , was the daughter of Sir William Gascoigne and Lady Margaret Percy. Through her mother, she is descended from Edward III...

 married Sir Thomas Fairfax

Thomas Fairfax (Gilling)

Sir Thomas Fairfax was an owner of Gilling Castle, near Gilling East, North Yorkshire, England. He is the last known ancestor of both the Duke and Duchess of Cambridge.-Sir Thomas Fairfax :...

 (died 1520-1521), who were the ancestors of Catherine, Duchess of Cambridge. Lady Margaret Percy was a descendant of Edward III

Edward III of England

Edward III was King of England from 1327 until his death and is noted for his military success. Restoring royal authority after the disastrous reign of his father, Edward II, Edward III went on to transform the Kingdom of England into one of the most formidable military powers in Europe...

.

Ancestry