Excavations at Dryslwyn between 1980 and 1995 uncovered a masonry castle, founded in the late 1220s by Rhys Gryg for his son Maredudd ap Rhys, the first Lord of Dryslwyn. The first castle was a simple round tower and polygonal walled enclosure, within which were constructed a kitchen, prison and wood-framed, clay-floored great chamber beside a great hall. In the mid 13th century a second ward was added and the great chamber rebuilt in stone. This castle was greatly expanded in the period 1283-87 by Rhys ap Maredudd, the second and final Lord of Dryslwyn, who built an Outer Ward and gatehouse....