BRISTOL.--Robert, Earl of Gloucester, the Empress Matilda's half-brother and great champion, is always credited with the building of Bristol Castle; but this is one of the many instances in which the man who first rebuilds a castle in stone receives the credit of being the original founder.[298] For it is certain that there was a castle at Bristol long before the days of Earl Robert, as the _Anglo-Saxon Chronicle_ mentions it in 1088, when it was held by Geoffrey, Bishop of Coutances, and Robert Curthose against William II.; and Symeon of Durham, in the same year, speaks of it as a "castrum fortissimum." Bishop Geoffrey held Bristol at the date of the Domesday Survey, and he probably built the castle by William's orders.[299] It was completely destroyed in 1655 (only a few 13th century arches in a private house now remain), and no trustworthy plan has been preserved, but there is clear evidence that it was a motte-and-bailey castle of the usual Norman type.[300] In Stephen's reign it was described as standing on a very great _agger_.[301] An _agger_ does not necessarily mean a motte, but it is often used for one, and there is other evidence which shows that this is its meaning here. A Perambulation of the bounds of Bristol in 1373 shows that the south-western part of the castle ditch, which enclosed the site of the keep, was called _le Mot-dich_; which should certainly be translated the ditch of the motte, and not, as Seyer translates it, the moat ditch.[302] Finally, the description of the castle in 1642 by Major Wood, says: "The castle stood upon a lofty steep mount, that was not minable, as Lieutenant Clifton informed me, for he said the mount whereon the castle stood was of an earthy substance for a certain depth, but below that a firm strong rock, and that he had searched purposely with an auger and found it so in all parts."[303] He goes on to describe the wall of the bailey as resting on an earthen rampart, testifying to the wooden stockade of the first castle. The great tower of Earl Robert appears to have been placed on the motte, which must have been of considerable size, as it held not only the keep, but a courtyard, a chapel, and the constable's house, besides several towers on its walls. The whole area of the castle was very nearly 4 acres.[304] Bristol Castle was no doubt originally a royal castle, though Earl Robert of Gloucester held it in right of his wife, who had inherited it from her father, Robert Fitz Hamon; but the crown did not abdicate its claim upon it, and after the troubles of 1174, Henry II. caused the son of Earl Robert to surrender the keep into his hands.[305]