No works of any importance can be assigned to the reign of Edward II., the only occurrences of importance being the downfall of the Knights Templars and the imprisonment of many of them at the Tower, where the Grand Prior, William de la More, expired in solitary confinement a few months after the close of the proceedings that marked the suppression of the order; and the escape of Roger Mortimer from the keep (which reads almost like a repetition of Flambard's), the consequences to the constable being his disgrace and imprisonment.[53] The Tower was the principal arsenal of Edward III., who in 1347 had a manufactory of _gunpowder_ there, when various entries in the Records mention purchases of sulphur and saltpetre "pro gunnis Regis."[54] A survey of the Tower was ordered in 1336, and the Return to it is printed _in extenso_ by Bayley.[55] Some of the towers are called by names (as for example, "Corande's" and "la Moneye" towers, the latter perhaps an early reference to the Mint) which no longer distinguish them. The Return shows that these--the Iron gate tower, "N," the two posterns of the wharf, and Petty Wales, "_P.P._," the wharf itself, and divers other buildings--were all in need of repair, the total amount for the requisite masonry, timber, tile work, lead, glass, and iron work being L2,154 17s. 8d.! In 1354 the city ditch is ordered to be cleansed and prevented from flowing into the Tower ditch, and, according to the _Liber Albus_, the penalty of death was promulgated against anyone bathing in the Tower ditch, or even in the Thames adjacent to the Tower! In 1347 the Tower received, in the person of David, King of Scotland, the first of a long line of royal prisoners, and in 1358 the large sum of L2 12s. 9d. was paid for his medicine. John, King of France, Richard II., Henry VI., Edward V., Queens Jane Dudley, Anne Boleyn, Catherine Howard, and Princess Elizabeth complete the list. The Great Wardrobe, "z," adjoining the Wardrobe tower, "s," the Beauchamp tower, "b," the upper story of the Bowyer tower, "e," and perhaps the Constable and Broad Arrow towers, "h" and "i," are probably of this period. Mr. Clark attributes the Bloody Tower gate, "m," to this reign, but an entrance existed there long before. Most probably it was remodelled, and the vaulting and portcullis were inserted about this time, or early in the reign of Richard II., to whom he also attributes the rebuilding of the Byward tower postern, "H." There is but little to record in the way of new works after this. Edward IV., in 1472, built an advanced work, called the Bulwark Gate, "A," and nothing further transpires till the reign of Henry VIII., who ordered a survey of the dilapidations to be made in 1532. The repairs of this period, being mostly in brickwork and rough cast, with flint chips inserted in the joints of the masonry, are easily recognised, as are those of Wren by his use of Portland stone.