Anne de Mortimer, Countess of Cambridge was the grandmother of the last of the Plantagenet dynasty whose defeat at Bosworth Field marked the end of what in England?
Anne de Mortimer Anne de Mortimer, Countess of Cambridge (27 December 1390 – c. 22 September 1411), was the mother of Richard Plantagenet, 3rd Duke of York, and the grandmother of King Edward IV and King Richard III.
John of Eltham, Earl of Cornwall John of Eltham, 1st Earl of Cornwall (15 August 1316 – 13 September 1336) was the second son of king Edward II of England and his queen Isabella of France. He was heir to the English throne from the date of the abdication of his father (25 January 1327) to the birth of his nephew Edward, the Black Prince (15 June 1330).