Lady Elizabeth Percy

Lady Elizabeth Percy (c. 1395 – 26 October 1436) was the daughter of Sir Henry Percy, known to history as 'Hotspur', and Elizabeth Mortimer, 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. After the death of Sir Henry Percy, Elizabeth Mortimer married, sometime after 3 June 1406, Thomas de Camoys, 1st Baron Camoys, who later commanded the rearguard of the English army at the Battle of Agincourt.

By her mother's first marriage to Sir Henry Percy, Elizabeth Percy had one brother, Henry Percy, 2nd Earl of Northumberland (3 February 1393 – 22 May 1455), who married Eleanor Neville (died c. 1473), widow of Richard le Despenser, and daughter of Ralph Neville, 1st Earl of Westmorland, by his second wife, Joan Beaufort, legitimated daughter of John of Gaunt, 1st Duke of Lancaster. They had nine sons and three daughters. He was slain at the First Battle of St Albans during the Wars of the Roses.

Elizabeth Percy also had a stepbrother, Sir Roger Camoys, the son of her mother's second marriage to Thomas de Camoys.

Elizabeth Percy married firstly John Clifford, 7th Baron de Clifford, slain at the Siege of Meaux on 13 March 1422. By him she had two sons and two daughters:

• Thomas Clifford, 8th Baron de Clifford, who married Joan Dacre, daughter of Thomas Dacre, 6th Baron Dacre, and Philippa de Neville, daughter of Ralph Neville, 1st Earl of Westmorland;
• Henry Clifford;
• Mary Clifford, who married Sir Philip Wentworth (c.1424-18 May 1464) of Nettlestead, Suffolk, beheaded at Middleham, Yorkshire, after the Battle of Hexham;
• Blanche Clifford, who married Sir Robert Waterton.

After Clifford's death in 1422, Elizabeth Percy married, in 1426, Ralph Neville, 2nd Earl of Westmorland (d. 3 November 1484), by whom she had a son, Sir John Neville, who married Anne Holland, daughter of John Holland, 2nd Duke of Exeter. Sir John Neville died shortly before 16 March 1450 without issue. His widow, Anne Holand, married another Sir John Neville who was the brother of Elizabeth Percy's second husband, Ralph Neville, 2nd Earl of Westmorland (d. 3 November 1484). They had an only son, Ralph, 3rd Earl of Westmorland.

Elizabeth Percy died 26 October 1436. She was buried at Staindrop, Durham.

Through her daughter, Mary Clifford, Elizabeth Percy was the great-grandmother of Jane Seymour, third Queen consort of King Henry VIII.