Engelard was appointed High Sheriff of both Gloucestershire and Herefordshire in 1210, following on from Gérard. The whole family of Gérard, including Engelard, were the only people to be condemned by name in Magna Carta, which was drawn up in 1215 during the baronial revolt of that year. In it the king made a number of commitments to meet the barons' demands, of which Item 50 specifically promised that Gérard Athée and his whole family would henceforth be banned from office. Engelard was duly relieved of his shrievalties in Gloucestershire and Herefordshire, although another member of the proscribed group, Philip Marc, remained in his post as High Sheriff of Nottinghamshire and Derbyshire until 1222. Engelard himself was compensated with the post of Constable of Windsor Castle, which he held until 1223.