Overview
Elizabeth Mortimer, Lady Percy and Baroness Camoys (12 February 1371 – 20 April 1417), was a medieval English noblewoman, the granddaughter of Lionel of Antwerp, 1st Duke of Clarence, and great-granddaughter of King Edward III. Her first husband was Sir Henry Percy, known to history as 'Hotspur'. She married secondly Thomas Camoys, 1st Baron Camoys. She is represented as 'Kate, Lady Percy,' in Shakespeare's Henry IV, Part 1, and briefly again as 'Widow Percy' in Henry IV, Part 2.
Family, marriages, and issue
Elizabeth Mortimer was born at Usk, Monmouthshire, Wales, on 12 or 13 February 1371, the eldest daughter of Edmund Mortimer, 3rd Earl of March, and his wife, Philippa, the only child of Lionel, 1st Duke of Clarence, and Elizabeth de Burgh, Countess of Ulster. Elizabeth Mortimer had two brothers, Sir Roger (1374–1398) and Sir Edmund (1376–1409), and a younger sister, Philippa (1375–1401), who married firstly John Hastings, 3rd Earl of Pembroke (d.1389), secondly Richard de Arundel, 11th Earl of Arundel (1346–1397), and thirdly, Sir Thomas Poynings.
It is unknown when Elizabeth was married to her first husband, Henry Percy, nicknamed 'Hotspur' (1364–1403), eldest son of Henry Percy, 1st Earl of Northumberland, who was already acquiring a reputation as a great soldier and warrior and responsible administrator in the early 1390s, when they were first together. They had two children:
Henry Percy, 2nd Earl of Northumberland (3 February 1393 – 22 May 1455), who married Eleanor Neville, by whom he had issue. He was slain at the First Battle of St Albans.
Lady Elizabeth Percy (c.1395-26 October 1436), who married firstly John Clifford, 7th Baron de Clifford, slain at the Siege of Meaux on 13 March 1422, by whom she had issue, and secondly Ralph Neville, 2nd Earl of Westmorland (d. 3 November 1484), by whom she had a son, Sir John Neville.
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