"Even under Aldred's auspices the monastery did not altogether flourish. But this time it was through the fault of Aldred himself, for, on his translation to York in 1060, he retained very many of the possessions of the abbey that had been pledged to him on account of his expenses in repairing and re-edifying the church."

In 1072, Wilstan (Wulstan), the Abbot consecrated by Aldred in 1058, died, and was succeeded by Serlo, who found the convent reduced to two monks and eight novices. Through his energy the monastery increased to such an extent that in about fifteen years' time it became necessary to rebuild the monastery.

This rebuilding was begun exactly thirty-one years after Aldred had built his church, de nova and a fundamentis. Why was this necessary? Professor Freeman says: "The reason is not very far to seek for any one who has really mastered the history of architecture during the eleventh century.... The simple fact is that the Norman prelates pulled down and rebuilt the English churches, mainly because they thought them too small." Further on he says: "This proves that, of the two types of church which were in use side by side in the days of the Confessor, Aldred had followed the older type. He had not conformed to the new Norman fashions, vast size among them, which were coming in after the example of the king's own church at Westminster.... His church was built in the Primitive Romanesque style, the style common to England, with Germany, Italy, and Burgundy, not in the newly-developed style of Northern Gaul. Therefore, neither its scale nor its style suited the ideas of Abbot Serlo.[2] It was condemned, and the minster that now stands was begun."

In the MS. Lives of the Abbots in Queen's College Library, Oxford, it is stated that "in A.D. 1089, on the day of the festival of the Apostles Peter and Paul, in this year were laid the foundations of the church (ecclesia) of Gloucester, the venerable man Robert, Bishop of Hereford, laying the first stone, Serlo the Abbot being in charge of the work." (So, too, Hart, i. 11.)

In August 1089 there was an earthquake, which did serious damage to the then existing building. Eleven years after this (1100), in the last year of the reign of William Rufus, "the church," as Florence of Worcester wrote, "which Abbot Serlo, of revered memory, had built from the foundations at Gloucester, was dedicated (on Sunday, July 15th) with great pomp by Samson, Bishop of Worcester; Gundulf, Bishop of Rochester; Gerard, Bishop of Hereford; and Herveas, Bishop of Bangor." This dedication under Serlo's régime is the last authentic record for some years.

Nothing is known exactly as to how much of the building was completed by 1100. Professor Freeman points out that eleven years was quite long enough for its building, and that there is no hint in the local chronicle of any additions being made to the building dedicated in 1100. Probably part of the church was finished for the dedication, such as the presbytery, choir, the transepts, the Abbot's cloister, the chapter-house, and the greater part, at any rate, of the nave.

The nave, though so different in scale as compared with the original choir, must have been built very early in the twelfth century, and, like the rest of the building, originally had a wooden roof.

In 1101 or 1102 damage was done to the building by fire, notably the chapter-house, and again in 1122. Possibly in this latter fire the nave roof was destroyed, and of this fire the piers in the nave show traces. Of the same date must be much of the strengthening masonry in the crypt, the Prior's lodging, the chapel, and the slype beneath it.

The whole of the Abbey buildings were surrounded by Abbot Peter with a stone wall, and the necessary gates—viz. the great gatehouse on the west, another on the south, and a third more to the east. All these can be identified from the small plan of the monastic buildings, reproduced (p. 103), by permission of Mr F. S. Waller. The Saxon Chronicle tells us that in 1122, while the monks were singing mass, fire burst out from the upper part of the steeple, and burnt the whole monastery. Some time between 1164 and 1179 one of the western towers, probably the south-west tower, fell down. Fire in 1190 is said to have destroyed the greater part of the city, as well as almost all the buildings in the outer court. Helias, the sacrist, also made new stalls for the monks in the choir. Of these Early English stalls, a fragment has been thoughtfully and carefully preserved behind the seat of the Canon in residence.

In 1222 we learn from Hart, i. 25, that the great eastern tower was built under the direction of Helias of Hereford, the sacrist. Of this tower no traces now remain. Helias built his superstructure on the Norman work that we see in the nave.