Chepstow Castle: A Norman Fortress and Marcher Stronghold
Site at a Glance
- Rating
- 4.6
- Popularity
- Medium
- Country
- United Kingdom
- Primary era
- Medieval
- External website
- Open
- Eras represented
- Medieval, Early Modern
- Civilizations
- English, Norman
- Site type
- Military
- Remains
- Castle
On this page14 sections
History
Chepstow Castle is a Norman stone fortification in the United Kingdom, located at Chepstow in Wales. Construction began in 1067 or shortly afterward under William FitzOsbern, a Norman lord and close associate of William the Conqueror. It is the oldest surviving post-Roman stone fortification in Britain, and its building history is generally divided into four major phases extending to about 1300.
Foundation and Norman expansion
The castle was originally called Striguil, a name derived from the Welsh term ystraigl, meaning “river bend.” The castle and its associated Marcher lordship, a semi-autonomous lordship on the medieval frontier between England and Wales, retained this name until the late fourteenth century. They then became known as Chepstow after the adjoining market town.
Chepstow occupied a strategic position above a major crossing of the River Wye and routes leading toward Monmouth and Hereford. It also helped protect Gloucestershire from Welsh attacks along the Severn shore toward Gloucester. The Welsh kingdoms in the area remained independent of the English Crown, although the rulers of Gwent may initially have maintained good relations with the Normans. There is no evidence of a substantial settlement on the site before the Norman invasion, though it may have been used as a prehistoric or early medieval stronghold.
William FitzOsbern founded a nearby priory, while the associated market town and port developed during the following centuries. The Great Tower was probably completed around 1090, possibly demonstrating King William’s strength in dealing with the Welsh king Rhys ap Tewdwr. During the twelfth century, the castle was used in the Norman conquest of Gwent, the first independent Welsh kingdom conquered by the Normans.
The Marshal and Bigod building programmes
In the 1190s, William Marshal, Earl of Pembroke, began a major programme of fortification. His military experience in France and during the Crusades informed the modernisation of the castle. He built the present main gatehouse, strengthened the Middle Bailey, an enclosed castle area containing buildings, yards, and defensive works, and may have rebuilt the Upper Bailey defences before his death in 1219.
William Marshal’s sons, William, Richard, Gilbert, and Walter, continued work on the Great Tower until 1245. The castle later came into the possession of Richard de Clare, another powerful Anglo-Norman magnate and Earl of Pembroke. In 1270, Roger Bigod, fifth Earl of Norfolk, inherited it through his descent from Maud, William Marshal’s eldest daughter.
Roger Bigod built new accommodation for himself and his family in the Lower Bailey and constructed Chepstow’s town wall, known as the Port Wall, around 1274–1278. King Edward I visited the castle in 1284 during his tour of Wales. Soon afterward, Bigod built Marten’s Tower and remodelled the Great Tower.
Declining military importance
From the fourteenth century, and especially after the English-Welsh wars ended in the early fifteenth century, Chepstow’s defensive importance declined. Control passed to Thomas de Brotherton, Earl of Norfolk, in 1312 and later to his daughter Margaret. During the rebellion led by Owain Glyndŵr, a Welsh nobleman who began a major revolt against English rule in 1400, the castle was garrisoned in 1403 by twenty men-at-arms and sixty archers. Its limited strategic value, geographical position, size, and relatively small garrison probably helped Glyndŵr’s forces avoid attacking it, although they successfully assaulted Newport Castle.
In 1468, the Earl of Norfolk granted the castle and its estates to William Herbert, Earl of Pembroke, in exchange for lands in eastern England. Sir Charles Somerset acquired it in 1508 and later became Earl of Worcester. He extensively remodelled the castle for private accommodation. After Henry VIII abolished the autonomous powers of the Welsh Marcher lords through the Laws in Wales Acts of 1535 and 1542, Chepstow became part of the new county of Monmouthshire. The castle was increasingly adapted as a substantial domestic residence rather than a primarily military stronghold.
Civil War, prison, and decline
During the English Civil War, the conflicts of the 1640s between supporters of the monarchy and Parliament, Chepstow stood on the front line between Royalist Monmouthshire and Parliamentarian Gloucestershire. Royalist forces held the castle, which was besieged in 1645 and again in 1648. Parliamentarian forces captured it on 25 May 1648.
Sir Nicholas Kemeys led the Royalist defence during the Second English Civil War and was killed in combat after refusing to surrender following the castle’s fall. A memorial to him was later placed within the keep. After the war, the castle was maintained as an artillery fort and barracks and was also used as a political prison. Its prisoners included Bishop Jeremy Taylor and, after the Restoration of the monarchy, Henry Marten, one of the commissioners who signed Charles I’s death warrant. Marten remained imprisoned there until his death in 1680.
The castle passed to the Duke of Beaufort in 1682. Its garrison was dissolved in 1685, after which parts of the buildings were dismantled, leased to tenants, and neglected. Other sections were used as a farmyard and a glass factory. By about 1700, the castle had fallen into decay.
Ruins, excavation, and conservation
By the late eighteenth century, the ruins had become a picturesque attraction on excursions along the River Wye. Charles Heath published the first guide to the castle and town in 1793, and visits increased during the nineteenth century, including steamship excursions from Bristol. J. M. W. Turner painted the castle from the River Wye in 1794. The painting was auctioned to the Chepstow Museum on 28 March 2023.
In 1910 and 1911, Dr Orville Ward Owen excavated the castle and the adjacent riverbed while searching for documents intended to prove that Shakespeare’s plays had been written by Francis Bacon. William Royse Lysaght purchased the castle in 1914 and began conservation work. The Lysaght family transferred it to the Ministry of Works in 1953, and since 1984 it has been cared for by Cadw, the Welsh government body responsible for protecting, conserving, and promoting Wales’s historic heritage. The ruins were designated Grade I listed on 6 December 1950, and the castle is also a scheduled monument in Wales, giving it statutory protection as an archaeological and historic monument of national importance.
Remains
Chepstow Castle occupies a narrow ridge between the limestone cliff above the River Wye and a landward valley known locally as the Dell. Its full extent is most clearly appreciated from the opposite bank of the river. Four baileys were added successively, and their arrangement preserves the sequence of the castle’s expansion. The resulting plan lacks a strong central keep and a concentric defensive layout, making it comparatively less strong as a fortress by medieval defensive standards.
Principal defensive structures
Great Tower
The Great Tower was built in stone from the outset, at a time when timber was common in many fortifications. Much of its stone appears to have been quarried locally, while some blocks were reused from the Roman ruins at Caerwent. The tower was enlarged by William Marshal’s sons up to 1245 and later remodelled by Roger Bigod. These successive alterations form part of the surviving fabric of the tower.
Main gatehouse and Middle Bailey
The present main gatehouse was built by William Marshal as part of his late twelfth-century strengthening of the castle. Its wooden doors have been dated to 1159–1189 by dendrochronology, the dating of timber through analysis of its annual growth rings. Marshal also reinforced the Middle Bailey with round towers. The surviving wall walks and altered defensive masonry reflect these medieval improvements.
Upper Bailey and Marten’s Tower
The Upper Bailey defences may have been rebuilt before William Marshal’s death in 1219. Marten’s Tower was constructed shortly after Edward I’s visit in 1284 and dominates the landward approach. Together, these features preserve the defensive development of the castle’s inland side and its successive expansion beyond the earlier works.
Residential and later-use buildings
Lower Bailey buildings
Roger Bigod constructed a new range of buildings in the Lower Bailey as accommodation for himself and his family. Sir Charles Somerset later remodelled parts of the castle extensively for private residential use. The surviving ruins therefore include buildings shaped by both aristocratic domestic occupation and earlier military purposes.
Prison and altered fabric
A room historically labelled “the Prison” was probably used as a cellar. Its surviving wooden door belongs to the twelfth century. Other ruined and altered buildings preserve traces of the castle’s later use as a prison, barracks, artillery fort, farmyard, and glass factory. The memorial to Sir Nicholas Kemeys remains within the keep, linking the surviving fabric to the castle’s Civil War history.
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