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Hyssington Mound and Bailey Castle is a medieval motte and bailey fortification in Wales, protected by Cadw under reference MG119. The monument consists of an earthen mound topped with a bailey, a characteristic form of castle built across Britain and Normandy from the 11th century onwards. Such fortifications were rapid to construct and provided effective defensive positions, allowing Norman and Anglo-Norman lords to establish military control over newly conquered or disputed territories.
The castle sits upon bedrock of Llanvirn Rocks, a sequence of mudstone, siltstone and sandstone formed during the Whiterock period of the Ordovician era. This solid geological foundation would have provided stable ground for the substantial earthworks that comprise the monument. The combination of natural stone beneath and artificial mounding above exemplifies how medieval builders exploited local geology and landscape to maximise the strategic strength of their fortifications.
Motte and bailey castles typically remained in use for a century or two before being superseded by stone structures. Their earthwork composition means they survive today as prominent landscape features, allowing archaeologists and heritage specialists to study the distribution and strategic positioning of early medieval military sites. Hyssington Mound and Bailey Castle represents an important surviving example of this ubiquitous medieval defensive form.
Hyssington Mound & Bailey Castle is a scheduled monument protected by Cadw under reference MG119. View the official record →
Hyssington Mound and Bailey Castle is a medieval motte and bailey fortification in Wales, protected by Cadw under reference MG119.
Hyssington Mound & Bailey Castle dates from the medieval period, and is classified as a motte and bailey. It is one of over 32,000 scheduled monuments protected across the UK.
Hyssington Mound & Bailey Castle is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is MG119.
Several scheduled monuments lie within 10 km, including Motte and bailey castle and bishops' palace (5.6 km), Motte castle at Colebatch, 100m north of Lagden (7.4 km), Billings Ring large univallate hillfort (8.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Hyssington Mound & Bailey Castle's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Hyssington Mound & Bailey Castle stands on Llanvirn Rocks (Undifferentiated), bedrock that formed in the Whiterock. The rock here is mudstone, siltstone and sandstone.