Penstowe Castle

Penstowe Castle, also known as Kilkhampton Castle, is a medieval fortification located near the village of Kilkhampton in Cornwall, England. Constructed in the 12th century during the turbulent period known as the Anarchy (1135–1153), this castle exemplifies the typical motte and bailey design prevalent in the High Medieval era. Although the exact date of its construction remains uncertain, historical evidence suggests it was built either by Robert, 1st Earl of Gloucester, a prominent supporter of Empress Matilda and feudal baron of Gloucester, or by his tenants and relatives, the influential Grenville family. The Grenvilles held the manor of Kilkhampton and Bideford from the Honour of Gloucester, linking the castle to the wider feudal network of the period.

Historical context and ownership

The castle's origins are closely tied to the civil war between King Stephen and Empress Matilda, a conflict that saw many fortifications hastily constructed for defense and control. Robert, 1st Earl of Gloucester, was a key figure during the Anarchy and likely commissioned Penstowe Castle to assert his authority in Cornwall. Alternatively, the Grenville family, particularly Sir Richard I de Grenville of Neath Castle in Glamorgan, may have been responsible for its establishment. The Grenvilles were significant landholders and their seat at Stowe House in Kilkhampton, rebuilt in 1679 by John Granville, 1st Earl of Bath, reflects their enduring prominence in the region.

Architectural features and layout

Motte and bailey design

Penstowe Castle was constructed as a motte and bailey castle, a common form of fortification in England during the 11th and 12th centuries. The castle is situated on a natural knoll, which provided a strategic vantage point and natural defenses. The motte itself is oval-shaped, measuring approximately 18 metres by 8 metres, and rises prominently above the surrounding landscape. This elevated earthwork would have supported a wooden or stone keep, providing a defensible stronghold.

Unusual bailey configuration

The layout of the baileys at Penstowe Castle is considered unusual, bearing some resemblance to the nearby Eastleigh Berries Castle. The baileys, enclosed courtyards used for domestic and military purposes, were likely arranged to maximize the natural topography, with steep slopes protecting the north and south sides. This natural defense reduced the need for extensive artificial fortifications on those sides.

D-shaped building on the motte

Archaeological evidence indicates the presence of a D-shaped building atop the motte. This structure would have served as the primary defensive and residential building, possibly a timber or stone keep. The D-shape is a distinctive architectural feature that may have been designed to provide better fields of fire and structural stability.

Strategic importance and location

Penstowe Castle's location near Kilkhampton placed it within a network of fortifications controlling access to Cornwall from Devon and the wider southwest region. The castle's position on a knoll with steep natural slopes enhanced its defensibility and allowed surveillance over the surrounding countryside. This strategic placement was vital during the Anarchy when control of territory was frequently contested.

Later history and legacy

While Penstowe Castle itself fell out of use and did not develop into a large stone fortress, its legacy is intertwined with the history of the Grenville family and the manor of Kilkhampton. The nearby Stowe House, rebuilt in the late 17th century by John Granville, demonstrates the family's continued influence long after the castle ceased to function as a military stronghold.

Current condition and archaeological significance

Today, Penstowe Castle survives primarily as earthworks, with the oval motte still clearly visible. The site is classified as archaeological ruins, offering valuable insights into High Medieval military architecture and feudal lordship in Cornwall. Its preservation allows historians and visitors to appreciate the defensive strategies and architectural styles of the 12th century.

Visiting Penstowe Castle

Visitors to the site can explore the remaining earthworks and enjoy views of the surrounding landscape that once made the castle a formidable defensive position. Although no significant standing structures remain, the site provides a tangible connection to the medieval past of Cornwall and the complex feudal dynamics of the Anarchy period.