Three weeks later father and son met once more, and for the last time. From Le Mans the allies moved eastward along the borders of Maine and the Vendômois, and thence into Touraine as far as Amboise; castle after castle surrendering to them without resistance. Henry had at first gone northward, but changed his course, and while they were thus occupied he made his way back, with a very small escort, to Chinon.[346] Negotiations were resumed; but the French king now saw his opportunity for an unparalleled display of his sovereign authority as lord paramount, and he resolved to be satisfied with nothing less than a surrender of the whole continental possessions of the Angevin house into his hands, to be restored or re-distributed at his own pleasure.[347] On July 1 he laid siege to Tours; on July 3 he took it by assault. Next day (July 4), at Colombières, Henry made the required surrender.[348] This done, Philip formally made him a new grant of the surrendered lands and received his homage for them on new conditions. One of these conditions was for the sole benefit of Philip; it was a fine of twenty thousand marks to be paid to him by Henry. The others concerned Richard. One related to Aloysia; another bound Henry to make all his barons, insular and continental, swear fealty to his rightful heir. No baron or knight who in this war had withdrawn from Henry’s service and joined Richard was to return to the former within a month of Mid-Lent next, at which date the two kings and Richard were to set out all together on the Crusade. All Henry’s barons were to swear that if he broke his plighted word with regard to anything in the agreement they would support Philip and Richard against him; and it seems that Philip and Richard, while restoring all their other conquests, were to retain either Tours, Le Mans, and the castles of Château-du-Loir and Trou, or Gisors, Pacy, and Nonancourt, “until all the things above determined by the king of France should be fulfilled.”[349]