Pembrokeshire
Slebech
Templar, later Hospitaller
The mother house of the Templars in Wales — a preceptory on the tidal Cleddau, granted by the Anglo-Norman lord Wizo before 1150 and continued as a Hospitaller commandery after 1312.
Slebech Commandery, on the northern bank of the Eastern Cleddau in Pembrokeshire, was the principal Templar preceptory in Wales. It was founded in the mid-twelfth century on land granted by the Norman lord Wizo the Fleming and his descendants, and it functioned as an estate headquarters rather than as a fortress.
From Slebech the brethren managed a scattered portfolio of granges, mills, fisheries and the crucial ferry crossing over the Cleddau — the medieval road from south Pembrokeshire to St Davids passed directly through their land. Rents, wool and pilgrim tolls all flowed back to the house.
When the Templars were suppressed in 1312 the estate passed intact to the Knights Hospitaller, who kept it as one of their most important British commanderies until the Reformation. The ruined shell of the medieval church of St John still stands beside the water — the most tangible Templar–Hospitaller site in Wales.
Visiting
The ruins of St John's Church are on the Slebech Park estate. Access is by public footpath from the A40; check the estate's visiting hours before setting out.
Coordinates: 51.7772°N, 4.8631°W
