 Fearing treachery, he refused to visit the King at Gloucester in August 1233, and Henry declared him a traitor.He crossed to Ireland, where Peter des Roches had instigated his enemies to attack him, and in April 1234, he was overpowered and wounded, and died a prisoner.His brother Gilbert (d. 1241), who became the 4th Earl, was a friend and ally of Richard, Earl of Cornwall.