In Tudor times, the south wall was breached, and a clumsy, flat-topped window of three lights inserted, for which much of the arcade has been cut away; and a rude wall with a door in it has been built across the south limb, probably to convert the oratory into two sleeping places. Upon the chalk ashlar of this chamber have been carved a considerable number of rude representations, apparently the work of one period. Some are simply incised, others carved in relief. There is one very evident Crucifixion, with a soldier piercing our Lord’s side, the disciples attending, and something like a veiled female figure about to faint. There is also a St. Christopher; a bishop recumbent beneath a crown; and other figures, both ecclesiastic and military. They are evidently the work of persons confined in this apartment, and as they are rude, illiterate, and without any trace of heraldic emblems, they are probably the work of common gaol prisoners, and are likely enough to be of the beginning of the thirteenth century, when the prison was over-crowded and every available space sure to have been employed. There was, of course, a larger chapel in the lower ward, not to mention the parish church of St. Mary, hard by. These carvings have been engraved, but not with the necessary correctness. It speaks little for the public spirit of Guildford that they are not photographed. On the other or north side of the main entrance, also in the west wall, is a second mural chamber, entered by a narrow, round-headed, original door, 2 feet 4 inches broad by 7 feet 7 inches high, quite plain, of ashlar. This chamber has a rude, round-headed barrel vault, and is 9 feet 2 inches long by 5 feet 1 inch broad. There is one loop in the west wall. The walls are rubble, but the internal jamb of the door, being of chalk ashlar, bears some carvings in the style of those described above. The third chamber is in the north wall, at its east end. Its door and much of its inner wall and floor have been removed to allow of the insertion of a fireplace and chimney-shaft, but enough remains to show that the chamber was 14 feet long by 3 feet 2 inches broad, and had a loop in the north wall. The eastern third of this chamber is uninjured. A depression in the floor, quite at the east end, looks as though it had been a garderobe for the state floor, and this idea is strengthened by the quoining and ashlar-work about the angles at that end. Brayley prolongs this chamber at a right angle into the east wall. This is a pure fiction. The quoining of the end shows that there was nothing further, and the groove in the wall is only meant to support the ends of the boards upon which the vault was turned. The fireplace, close west of this chamber, of which the flue remains, is an insertion. The position of the mural chamber and of the window shows, however, that there may have been an original fireplace here.