Chapter 6: What survives · §1 Slebech today
The Ruin on the Cleddau
The shell of the church of St John the Baptist stands at Slebech, sitting just above the high-tide mark of the Eastern Cleddau. The walls are now green with damp and the windows remain open to the weather. This building is the final physical trace of the administrative headquarters of the crusading orders in Wales. Below the ruins, the tidal river flows as a wide expanse of brackish water that retreats to reveal gleaming banks of silt. The water moves today much as it did when the first Flemish settlers arrived under the protection of the Wizo family. It appears as a plain, unremarkable ruin, which is the specific problem this book addresses.
These ruins are mostly the result of centuries of neglect following the Dissolution and the total abandonment of the site when a new parish church was built further up the slope in the 1840s. A roofless shell remains at the water’s edge; the limestone walls are bleached by the weather and a carpet of soft grass has replaced the floor. The plan of the site is simple, featuring a nave, a later tower, and a chancel that served the local people and the resident brothers of the Order. The architectural details that survived the collapse, such as the lancet windows and the refined stonework of the south door, indicate a building of higher status than the typical rural parish churches found in the southern Marches.
The setting is quiet and forms part of the Slebech Park estate, which turned a once rigorous agricultural machine into a domestic landscape. A modern visitor must look past the manicured lawns and the Georgian style of the nearby Slebech Hall to see the medieval commandery in the mind. In the fourteenth century, Philip de Thame recorded the site in his 1338 Report of the Prior of Philip de Thame to the Grand Master Elyan de Villanova. At that time, granaries, a mill, a bakehouse, and lodgings for the preceptor and his staff surrounded the church. This was a village-sized complex that managed thousands of acres of Pembrokeshire soil, rather than a lonely, isolated ruin.
Two weathered effigies lying within the chancel are the most evocative remains found inside the church. Time and damp have blurred their features, but these figures are generally identified as members of the Barlow family who bought the site after 1540. They represent the transition from sacred military orders to the secular landed gentry. The Barlows maintained the medieval church for several centuries, and their papers provide a glimpse of the slow decay of the Hospitaller buildings. The former commandery remained a focus for local power long after the last brother departed for Clerkenwell or Malta. Even as the medieval walls crumbled, the site kept its prestige and stayed important to the local ruling class.
Architecturally, the church of St John shows the shift from the austerity of the early thirteenth century to the decorated styles of the fourteenth century. Masonry scars are still visible where altars stood and where the screen separated the lay congregation from the brethren. The proximity to the river matters. The church stood at the gateway to the estate and was visible to every merchant or pilgrim arriving by water. This maritime orientation was important to the wool trade and the Cleddau ferries. It is a connection that feels real today as the tide ebbs and flows just a few yards from the western door. The water and stone remain linked by their shared history.
The survival of these ruins is a minor miracle of Welsh topography. Many Templar and Hospitaller properties were absorbed into later farmsteads or destroyed by urban growth, but the isolation of Slebech preserved its medieval footprint. It is the most tangible link to the Orders in Wales. Here, the documentary evidence of the 1308 inventories and the 1338 survey meets the reality of stone and mortar. Even without a roof, the church has acoustic clarity. This is evidence of the masonry skills the Orders brought to this frontier. They used the wealth from their continental estates to build a lasting presence on the edge of the world, leaving a permanent mark.
Walking back up the hill toward the modern road, the church is quickly hidden by the dense woodland of the Cleddau valley. It is a site that requires effort to visit and even more effort to understand, as it has been stripped of its purpose and finery. For the historian, the silence of Slebech is a prompt. It forces us to consider what was lost when the red and white crosses were lowered. We must look at how the memory of these international soldiers of Christ has been managed, changed, or forgotten in the centuries that followed the fall of their order. The ruins stand as a quiet witness to that lost era.
It is this process of curation, and the way the physical remains have been interpreted by later generations, that defines our final understanding of the Welsh preceptories.