According to Matthew Paris the church was dedicated in 1238 by the Bishop of Lincoln, Robert Grosseteste. In the Thirteenth Century many changes were made. The bell-tower was built, and bells from London, called _Les Londreis_, were hung in it. The Lady-Chapel (now destroyed) was built in 1272 at the east of the north transept (as at Ely). In the Fourteenth Century the great round east and west arches of the central tower were changed into pointed ones, perhaps because the tower at Ely had fallen in 1321 and the monks wanted to strengthen theirs. Then they began to change all the triforium windows in the nave and choir from Norman to Decorated. Next, the central porch was added to the west front. During the Perpendicular period all the Norman windows that had not been altered were now filled with Perpendicular tracery; the great west window was also brought up to date, the battlements were added to the corner turrets, and the New Building tacked on to the East End of the choir. A popular story related that Henry VIII. spared the church because his queen, Katherine of Aragon, was buried there. At any rate, he made Peterborough a cathedral in 1541, when he suppressed the monasteries. The great historical event in connection with Peterborough was the burial of Mary, Queen of Scots, in 1587. Cromwell’s soldiers made sad havoc. Dean Patrick informs us that “The next day after their arrival, early in the morning they break open the church doors, pull down the organs of which there were two pair. “Then the soldiers enter the quire, and their first business was to tear in pieces all the common prayer-books that could be found. Next they break down all the seats, stalls and wainscot that was behind them, being adorned with several historical passages out of the Old Testament. “Now behind the communion-table there stood a curious piece of stone-work, admired much by strangers and travellers: a stately skreen it was, well wrought, painted and gilt, which rose up as high almost as the roof of the church, in a row of three lofty spires, with other lesser spires growing out of them. This now had no imagery work upon it, or anything else that might justly give offence, and yet because it bore the name of the high altar, was pulled down with ropes, lay’d low and level with the ground. “Over this place, in the roof of the church, in a large oval yet to be seen, was the picture of Our Saviour seated on a throne; one hand erected and holding a globe in the other, attended with the four Evangelists and saints on each side, with crowns in their hands, intended, I suppose, for a representation of Our Saviour’s coming to judgment. This was defaced and spoilt by the discharge of muskets. “Then they rob and rifle the tombs and violate the monuments of the dead....