Who married Guy de Beauchamp II?

Sir Guy de Beauchamp (born c. 1335 - died 28 April 1360), Knight, was an English nobleman and heir apparent to the title of Earl of Warwick, being the eldest son of the 11th Earl of Warwick. He served as a military commander in the army of Edward III in France, where he was mortally injured in a freak hailstorm during the Siege of Chartres on 13 April. He died three weeks later on 28 April 1360.