 Complete the following phrase:  The Manor passed from the Count of Meulan to Henry de Beaumont, 1st Earl of Warwick, who enfeoffed his great-nephew Thurstan, the first of the De Montforts of Beaudesert, and the builder of the castle. About the year 1140, Thurstan obtained from the Empress Matilda the right to hold a market on Sundays at his castle of Beaudesert. He was succeeded by his son Henry, who died in 1191 and then by his son, Thurstan who, dying in 1216, was succeeded by his son Peter, a minor, and who became a ward of William de Cantelupe of Aston Cantlow; it was this association which led him to later side with the Barons. Peter de Montfort became the most powerful of all the de Montforts and in him the family was at the height of its glory. Peter obtained on, 10 February 1227 the grant of a market on Monday and a yearly fair at his manor of Beaudesert to be held on the eve, feast, and morrow of St. Giles. In the 