Thomas Beauchamp, 11th Earl of Warwick

Thomas de Beauchamp, 11th Earl of Warwick, KG (c. 14 February 131313 November 1369), sometimes styled as Lord Warwick, was an English nobleman and military commander during the Hundred Years' War. His reputation as a military leader was so formidable that he was nicknamed 'the devil Warwick' by the French.
In 1348 he became one of the founders and the third Knight of the Order of the Garter.
Thomas was undoubtedly a brave warrior in battle and proved to be a strong military leader. For example, the 14th century Anonimalle Chronicle states that when news arrived of his landing at Calais, the Duke of Burgundy, whose forces were camped nearby, made a hasty retreat under cover of darkness to avoid an encounter with 'the devil Warwick'. 
He fought in Scotland as Captain of the army against the Scots in 1337 at the age of 24. He also fought in the Hundred Years Wars with France, commanding the English victory at the Battle of Crecy in 1346.
Early life.
Thomas de Beauchamp was born at Warwick Castle, Warwickshire, England to Guy de Beauchamp, 10th Earl of Warwick and Alice de Toeni. He served in Scotland frequently during the 1330s, being captain of the army against the Scots in 1337. He was hereditary High Sheriff of Worcestershire from 1333 until his death (in 1369). In 1344, he was also made High Sheriff of Warwickshire and Leicestershire for life. 
Victor at Crécy and Poitiers.
Warwick was Marshal of England from 1343/4 until 1369, and was one of the commanders at the great English victories at Crécy and Poitiers.
Thomas de Beauchamp fought in all the French wars of King Edward III; he commanded the centre at the Battle of Crecy (where many of his relatives were killed, including his younger half-brother Alan la Zouche de Mortimer). He was trusted to be guardian of the sixteen-year-old Black Prince. Beauchamp fought at Poitiers in 1356 and at the Siege of Calais (1346).
He began the rebuilding of the Collegiate Church of Saint Mary in Warwick supposedly using money received from the ransom of the archbishop of Sens who he captured at Poitiers, but that is an over-simplification. He died of plague in Calais on 13 November 1369 and was entombed along with his wife Katherine, countess of Warwick, in the chancel of St Mary's Warwick.
Marriage and children.
He married Katherine Mortimer, daughter of Roger Mortimer, 1st Earl of March. They had five sons and ten daughters:
Catherine Grandison, Countess of Salisbury was not his daughter, although she is presented as such in William Painter's "Palace of Pleasure" and in the Elizabethan play "Edward III", which may be by William Shakespeare.
Death.
Beauchamp's wife Katherine died on 4 August 1369. Beauchamp died three months later, on 13 November 1369, of the Black Death and was buried alongside his wife at St. Mary's Church, Warwick, Warwickshire.