Newcastle Castle
Updated: Aug 29, 2025
Historic Overview
Newcastle Castle (Y Castell Newydd) is located on a steep hill on the west bank of the River Ogmore, In Bridgend, South Wales. It was established in 1106 by Robert FitzHamon, the first Norman Lord of Glamorgan, and constructed by William de Londres, one of the Twelve Knights of Glamorgan. This was de Londres' only castle located to the west of the River Ogmore. There is no evidence of a surrounding ditch, and the medieval parish church lies to the south of the site. Newcastle Castle was one of three fortifications built in the area during the 12th century, alongside Coity Castle and Ogmore Castle, with all three castles strategically placed to protect the region of Glamorgan from Welsh resistance. While there are no visible earthworks from the original construction phase, it is likely that the site began as a ringwork. A round-cornered building somewhat survives inside the castle walls but the walls have been partly demolished.
The defences were substantially strengthened during the 12th century, possibly in response to an uprising led by the Welsh Lord Morgan ap Caradog of Afan. The castle was rebuilt in stone under the authority of either Earl William Fitz Robert or Henry II and included a keep, part of a curtain wall, and a Norman gateway. Upon the death of Henry II in 1189, Newcastle Castle passed to Prince John, who granted it to Morgan ap Caradog. After Morgan’s death in 1208, his son Lleison succeeded him. Following Lleison's death around 1214, the castle came into the possession of Isabel, Countess of Gloucester, the first wife of King John. In 1217, ownership briefly transferred to the Anglo-Norman baron Gilbert Fitz Richard before being handed over to Gilbert de Turberville, who preferred to reside at Coity Castle.
Architectural Overview
The primary defensive feature of the castle is its D-shaped enclosure, constructed during the 12th century. The curtain wall that surrounds the enclosure incorporates several towers, with the south tower being the most intact, containing three storeys. The west tower remains largely a base with little of its upper structure surviving. The most distinctive feature is a well-preserved entrance gate, which remains a significant architectural element. Despite centuries of decay, the gate serves as a reminder of the castle's strategic importance and its lasting presence in the region's history. A hall was later added with a central hearth, further emphasizing the castle's role as both a military stronghold and a centre of administration.
In the 16th century, the south tower was remodelled to include Tudor windows and fireplaces, reflecting a shift towards residential use. A courthouse was added during a period of increased local administration, reflecting the castle's evolving role in governance. The bailey area, which was likely home to various auxiliary structures, still retains the remains of an additional building, although its dating remains unclear.
Modern Legacy
Newcastle Castle became a designated Scheduled Monument (GM063) and Grade II* Listed Building (Cadw Ref. 11313) in 1986, acknowledging its historical and architectural significance. The designation underscores the castle’s importance as a key site in the medieval heritage of South Wales. In 1996, trial excavations at the site yielded a modest assemblage of human remains, pottery fragments, glass, and iron, indicating potential previous use of the area for domestic or funerary purposes. These discoveries contribute valuable insights to the ongoing archaeological understanding of the castle’s history and its role within the broader context of medieval settlement in the region.
Today, the castle grounds remain open to the public year-round, free of charge, providing an accessible location for visitors to explore the site. The grounds are a popular destination for both locals and tourists, offering a tranquil setting ideal for picnics and outdoor recreation. The site’s open access allows for a deeper appreciation of the castle's architectural remains, as well as its strategic position overlooking the River Ogmore, reinforcing its significance as a prominent historical landmark in the region’s cultural landscape.
Location
15 The Square,
Bridgend,
CF31 4EY.
NGR SS9022480078
Selected Bibliography
Archwilio. (2024). Newcastle Castle (PRN 00123m). Archwilio Database. Available at: https://archwilio.org.uk [Accessed 09 Mar. 2025].
Cadw. (1986). Newcastle Castle (Scheduled Monument GM063, Grade II* Listed Building, Cadw ref. 11313). Cadw: Welsh Government.
Coflein. (2024). Newcastle Castle. NPRN 93020. Available at: https://coflein.gov.uk/en/site/93020/ [Accessed 09 Mar. 2025].
Glamorgan-Gwent Archaeological Trust. (1996). Archaeological Investigation at Newcastle Castle. Report No. 96/23. Glamorgan-Gwent Archaeological Trust Report.
Hull, L. (1997). The Norman Castles of Wales. Report No. 97/02. Cardiff University Press.
Jones, I. (2012). Archaeological Watching Brief at Newcastle Castle. Report No. AW/NC/2012. Archaeology Wales.
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Dallimore, J. (2025 March 09). Newcastle Castle. The Archaeology Addict. Retrieved from https://thearchaeologyaddict.wixsite.com/thearchaeologyaddict/post/newcastle-castle
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Dallimore, Jessica J. "Newcastle Castle" The Archaeology Addict. The Archaeology Addict. 09 Mar 2025. https://thearchaeologyaddict.wixsite.com/thearchaeologyaddict/post/newcastle-castle
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Dallimore, Jessica J. "Newcastle Castle" The Archaeology Addict. Last modified March 09, 2025. https://thearchaeologyaddict.wixsite.com/thearchaeologyaddict/post/newcastle -castle
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