Wiston Castle is a motte and bailey castle in the Pembrokeshire village of Wiston. The castle and village were founded by Wizo, a Flemish settler who was granted the land by Henry I of England after he had wrested control from the previous owner, Arnulf de Montgomery (who was in revolt against Henry). The castle was captured by the Welsh on several occasions but on each occasion it was retaken. It was abandoned during the thirteenth century when the then owner moved to nearby Picton Castle.
Wiston Castle is considered one of the best preserved motte-and-bailey castles in Wales. It is built on the summit of a hill to the north of Wiston with the motte about 9 m above the base of the ditch. Surrounding the flat top there is a shell-keep that would have been the main fortification inside which all the buildings, mostly made of timber, would have been placed. The external face of the shell-keep is polygonal, with eighteen short sections, but some of these have subsided into the ditch on the north side. The inside of the shell-keep is circular. There is an arched entrance on the south side and on either side of this there are draw-bar holes which would have been used to secure the main gate. Inside is a large, oval bailey protected by a well-preserved bank. The lord's main residence would have been inside the bailey.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.