Owen Glendower, who had not shared the defeat of the Percies at Shrewsbury, still held out. In 1404 he assumed the title of Prince of Wales. In the June of that year the Sheriff of Hereford, with various gentlemen of the county, represented to the King that they were suffering greatly from the ravages of the Welsh rebels. The Prince was directed to go to their help, and on the 20th of the month wrote to his father from Worcester, to which city he had removed his headquarters. He thanks him for his kind letter written from Pontefract five days before, and rejoices in the news it brought of his health and prosperity, which are, he says, the greatest pleasure that can come to him in the world. He had been taking measures for the defence of the county of Hereford, which the Welsh rebels had been ravaging with fire and sword, and he would do all he could to resist them and to save England from their attacks. Another letter to the same effect was addressed by him to the Council, and a second four days afterwards. On August 30th the Council granted him three thousand marks for the expenses of holding the castle of Denbigh and other strongholds in North Wales, and suggested that he should remain for a certain time on the borders of Herefordshire, and afterwards invade Wales. In a document apparently belonging to the same time there is a list of castles in North Wales which the Prince had kept at his own cost since the commencement of the rebellion. In March 1405 the Prince wrote to the King relating a victory which he had won over the Welsh: “On Wednesday, the 11th day of this present month of March, the rebels in parties from Glamorgan, Morganoe, Usk, Netherwart, and Overwart were assembled to the number of eleven thousand by their own account. On the said 11th of March they burnt part of your town of Grosmont. Thereupon I sent my dear cousin Lord Talbot and others. To them there joined themselves your faithful and valiant knights, William Newport and John Greindel. And though they were but a small number, yet was it well seen that the victory is not in the multitude of the people but in the power of God.... By the aid of the Blessed Trinity your people held the field of battle and vanquished the said rebels, and slew of them, by one account eight hundred, since said one thousand.... No prisoners were taken save one, a great knight, whom I would have sent to you but that he cannot yet comfortably ride.... I pray God to keep you always in joy and honour, and to grant me that I may soon comfort you with other good news.”