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.
Eleanor de Bohun Lady Eleanor de Bohun (c. 1366 – 3 October 1399) was the elder daughter and co-heiress with her sister, Mary de Bohun, of their father Humphrey de Bohun, 7th Earl of Hereford (1341–1373). Her mother was Lady Joan Fitzalan, daughter of Richard FitzAlan, 10th Earl of Arundel and his second wife Eleanor of Lancaster.