He was the son of Guy de Beauchamp, 10th Earl of Warwick.
Warwick was Marshall of England from 1343/4 until 1369, and was one of the commanders at the great English victories at Crecy and Poitiers.
He married Catherine Mortimer, daughter of the 1st Earl of March, and was succeeded by his son Thomas de Beauchamp, 12th Earl of Warwick.