*YALE.--The _Brut_ tells us that in 1148 (read 1150) Owen Gwynedd built a castle in Yale. Powell identified this with Tomen y Rhodwydd, a motte and bailey on the road between Llangollen and Ruthin. Yale, however, is the name of a district, and there can be little doubt that the castle of Yale was the motte and bailey at Llanarmon, which for a long period was the _caput_ of Yale.[891] Yale undoubtedly belonged to the Normans when Domesday Book was compiled,[892] and it is therefore not unlikely that these earthworks were first thrown up by the Earl of Chester. The castle was burnt by Jorwerth Goch in 1158, but restored by John in 1212. One of the expenses entered for that year is "for iron mallets for breaking the rocks in the ditch of the castle of Yale."[893] This ditch cut in the rock still remains, as well as some foundations on the motte,[894] which is known as Tomen y Vardra, or the Mount of the demesne.[895] * * * * * How long the two last-mentioned groups of castles continued in Anglo-Norman hands we do not attempt to say. North Wales, as is well known, reaped a harvest of new power and prosperity through the civil war of the end of John's reign, and the ability of Llywelyn ap Jorwerth. Our task ends with the reign of John. We have only to remark that until the _Pipe Rolls_ of Henry III.'s reign have been carefully searched, it is impossible to say with certainty what castles of North Wales, or if any, were still held by the English king. CHAPTER IX MOTTE-CASTLES IN SOUTH WALES It is not possible to fix certain dates for all the Norman conquests of the several provinces of South Wales. These conquests proceeded from various points, under different leaders. We might have expected that the earliest advances would have been on the Herefordshire border, the earldom of Hereford having been given by William I. to William FitzOsbern, one of his most trusted and energetic servants. Ordericus tells us that FitzOsbern and Walter de Lacy first invaded the district of Brecknock, and defeated three kings of the Welsh.[896] This looks as though the conquest of Brecknock was then begun. But it was not completed till the reign of Rufus; in 1093 Bernard of Neufmarché defeated and slew Rhys ap Tudor, King of South Wales, in a battle which the Welsh chronicler speaks of as the fall of the kingdom of the Britons.[897] William FitzOsbern died in 1071, and he had scarcely time to accomplish more than the building of the border castles of Wigmore, Clifford, Ewias, and Monmouth, and the incastellation of Gwent, that is the country between the Wye and the Usk, which had already been conquered by Harold.