“As usual they arranged their building operations so as to avoid interfering with the services in the choir as long as possible. First they rebuilt the north aisle of the choir, but not so high as it is at present. The aisle remained narrow because Gundulf’s tower was in the way. But the south aisle of the choir they doubled in width. Next they set to work at the east end, planning it, as at Hereford, as an eastern transept with an eastern aisle and projecting eastward an oblong sanctuary (cf. Southwell). The new transept was lofty and broad; and it is quite possible that it was built over the top of Gundulf’s east end without disturbing daily services within it. Then when all was finished Gundulf’s east end was pulled down. Unlike the Worcester monks they preserved the level of the Eleventh Century choir, and consequently had to continue Gundulf’s crypt eastward. In the new presbytery is seen the same curious mixture of quadripartite and sexpartite vaulting as in St. Hugh’s eastern transept at Lincoln. All this work was finished in 1227.”--(G. H. P.) The monks were enabled to undertake rebuilding on this large scale because in 1201 they acquired a new saint. A baker of Perth, named William, famed for his piety, started to the Holy Land. He got as far as the road to Canterbury, where his servant killed him for his money. The monks found the body and buried it in the choir of St. Andrew’s. St. William soon began to work miracles and attracted many of the pilgrims on their way to the Shrine of St. Thomas at Canterbury. The choir, rebuilt by means of the offerings, was first used for service in 1227. “The choir and transepts of Rochester Cathedral are a very beautiful and remarkable example of Early English. The architect was William de Hoo, first sacristan, then prior, and there is some reason to believe that he is the same person as William the young Englishman, who assisted William of Sens after his fall from the scaffold at Canterbury, and completed the work there. A young man at Canterbury in 1185, able to carry on and complete such a work, may very well have become the architect on his own account of the daughter church of Rochester in 1201-1227, and there is great resemblance in style between Rochester and the later work at Canterbury.”--(J. H. P.) About this time the monks resolved to have a central tower and to rebuild the nave. While all this work was going on, the church was desecrated by the troops of Simon de Montfort. A chronicler relates that