Only once does it appear that the king’s conscience pricked him for the extortions he was continually practising on the citizens. This was in 1250, when he called the citizens together at Westminster, and begged their forgiveness for all trespasses, extortions of goods and victuals under the name of "prises," and for forced loans or talliages. Seeing no other way out of it, the citizens acceded to his request.(225) As recently as the previous year (1249) he had exacted from them a sum of £2,000.(226) (M142) Henry had been crowned at Gloucester soon after his accession.(227) Nevertheless he was again crowned—this time in London in 1236, after his marriage with Eleanor of Provence. The city excelled itself in doing honour to the king and queen as they passed on their way to Westminster: but the joy of the citizens was damped by the king refusing to allow Andrew Bukerel the mayor to perform the customary service of assisting the chief butler at the coronation banquet. It was not a time for raising questions of etiquette, so the mayor pocketed the affront, preferring to settle the question of the city’s rights at some more convenient time, rather than damp the general joy of the company by pressing his claim.(228) (M143) Yet, notwithstanding his manifestly unjust treatment of the citizens of London, and the cynical contempt with which he looked upon their ancient claim to the title of "barons," he usually went through the formality of taking leave of them at Paul’s Cross or at Westminster, before crossing the sea to Gascony(229) and was not above making use of them when compelled to sell his plate and jewels to satisfy his debts. In 1252, he even went so far as to grant them a charter of liberties, but for this concession the citizens had to pay 500 marks.(230) (M144) It is scarcely to be wondered at if, when the crisis arrived, and king and barons found themselves in avowed hostility, the citizens of London joined the popular cause. By the month of June, 1258, the barons had gained their first victory over Henry. He was forced to accept the Provisions of Oxford, passed by the Mad Parliament,(231) as it came to be called in derision. The Tower of London was transferred to the custody of the barons, and they were for the future to appoint the justiciar. Towards the end of July, a deputation from the barons waited upon the mayor and citizens to learn if they approved of the agreement that had been made with the king.(232) (M145) The mayor, aldermen, and citizens, after a hasty consultation, gave their assent, but with the reservation "saving unto them all their liberties and customs," and the city’s common seal was set to the so-called "charter" which the deputation had brought. (M146)