John's son, Henry III, was a great builder at Windsor. He raised the Bell, the Clewer, the Berners, and the Almoners' Towers on the north side, and on the south-west the Garter and Salisbury Towers, completed the ditch on the west and added a barbican, and in the upper ward made two great chambers for himself and his queen, and a chapel with painted windows. The King's Hall, in the Clewer Tower, is now the Library of the Dean and Chapter. In 1248 Henry received the Papal nuncios at the Castle. In 1261 he kept Christmas there with his queen and his daughter, the Queen of Scotland. It was a fine season, more like summer than winter, and Margaret of Scotland had come that she might bear her first child in her native place. She had been born at Windsor in 1240, and spent her childhood in the Castle with her brother, afterwards Edward I, who was a year older. Married as a child to Alexander III, she spent an unhappy girl-wifehood in Scotland, and was not allowed to visit England. But in 1261 she concealed the nearness of her time from the Scots and her husband and came to Windsor where, after a long waiting with her mother, the child was born. There was then no more splendid castle in Europe, says Matthew of Westminster. As a fortress it was of first importance, as a palace it was unrivalled. On the outbreak of the war with the barons Henry's son Edward occupied the Castle, placed his wife Eleanor there, and strengthened it with foreign troops, who devastated the surrounding country. It was used as a prison for London citizens. Two years later, in 1265, it surrendered to de Montfort. After his death, followed by the Ban of Kenilworth and the conclusion of peace, Henry came to Windsor again in 1268. Edward I and his queen often lived at Windsor; three of their children were born there; and in 1278 he held a tournament in the Park with thirty-eight of his knights. His son, Edward II, kept Christmas at the Castle in 1308 and afterwards, and in 1312 his first son, Edward III "of Windsor", was born there. When the Despensers returned in 1321 and the opposition barons were put to death, Francis de Aldenham suffered at Windsor.