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?
Richard III of England Richard III (2 October 1452 – 22 August 1485) was King of England from 1483 until his death in 1485, at the age of 32, in the Battle of Bosworth Field. He was the last king of the House of York and the last of the Plantagenet dynasty. His defeat at Bosworth Field, the last decisive battle of the Wars of the Roses, marked the end of the Middle Ages in England. He is the subject of the historical play "Richard III" by William Shakespeare.
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).