It was all done in haste. It was repented of, no doubt, at leisure. In the enthusiasm of the moment Bishop William founded the one and only abbey in the Bishopric of Durham. His successors, we may well believe, deplored what was politically and ecclesiastically a great mistake. But what was done could not be undone by anything less than a revolution. The Abbey of Durham grew and was strong. The magnificence of its buildings tells of the wealth of the builders. The Durham Household Book speaks of the stir and pomp and cheerfulness of its daily life. Meanwhile, the two more ancient sanctuaries were reduced to the insignificant condition of Cells. They were left with their old estates, each under the rule of a master, appointed or removed by the Prior of Durham at his will. Each master had one monk with him for company, sometimes two, and very rarely three. The masters appear to have taken but little interest in the spiritual affairs of their churches. The naves of these buildings were considered the property of the parishioners, who executed repairs at their own cost; an ill-paid stipendiary, called the chaplain or parish priest, discharged all parochial duties. The church of Jarrow had its chapels at Wallsend, at Shields, and at Westoe. The first named of these was left very much to itself; the very altar-fees of the other chapels, as well as those of the churches, were the perquisite of the master, while the services of the chaplain were remunerated at very much the same rate as those of the monastery barber. The result as regards the fabrics was much what might have been expected. The nave at Monkwearmouth was left to itself; that at Jarrow was at some time extended so as to include the ground occupied by its eastern porch. The other porches or chapels that once flanked this building may have served for a while as parts of the parish church; then they fell one after another by a lingering process of decay. On the other hand, Monkwearmouth Church was in course of time enlarged; a north aisle was added in the thirteenth century; its very pleasing doorway has been fortunately preserved. About the same time two rather large windows were set to lighten the east end of the nave of Jarrow. The case was different with the conventual part of the two churches. At Monkwearmouth, as we have seen, the choir was made long and lofty. Two Decorated windows were placed on its southern side; a third, similar to the others, stood in the north wall, all traces of which seem to have been destroyed in quite recent times. The date of these windows is fixed by an entry in the account rolls under the year 1347. A little later an east window of five lights was erected; it has been reproduced from its fragments, and is not without merit. The design at Monkwearmouth is, however, far better than the workmanship.