 In 1332, the local feudal lord, John de Cherleton, accused the abbot and monks of working against English rule in Wales; he evicted all the Welsh monks, sending them to English houses, and replacing them with English monks from Buildwas Abbey in Shropshire.During the Owain Glyndŵr rising at the beginning of the 15th century the buildings were heavily damaged and the monastery never completely recovered.The abbey was finally closed in 1536 at the dissolution of the monasteries in England and Wales, when its income was valued at no more than £64 a year.