This strategic location is home to Threecastles, a complex of medieval fortifications that once guarded this important position. At the eastern end of the site, approximately 100 metres from a Norman motte and within the stable yard of Threecastles House, stand the remains of what may be the most intriguing of the three castles that gave the area its name.

Local historian Carrigan, writing in 1905, identified this structure in Mrs Clarke’s yard as one of the three original castles, though he puzzlingly referred to it as both a chapel and a castle. His detailed measurements reveal a two-storey stone building with remarkably thick walls; the lower level measures 7.62 metres long by 3.81 metres wide internally, with walls 1.21 metres thick, whilst the upper storey extends to approximately 9 metres in length and 4.72 metres wide. The building features a semi-circular stone arch dividing the floors, with the original plaster ceiling still intact on the lower level. The absence of a window in the north-eastern gable led Carrigan to suggest the altar, if this was indeed a chapel, would have stood at the south-western end.

By 1948, when Gibb documented the site, the structure had been incorporated into farm buildings, with what locals called “the high stable” built over the ground floor. Despite these alterations, the vaulted ceiling remained in excellent condition, and portions of the original castle walls were still visible alongside the stable. Today, this enigmatic building continues to perplex historians; whether it served as a defensive tower house, a private chapel, or perhaps both at different times, it remains a fascinating piece of Threecastles’ medieval heritage, now quietly serving agricultural purposes whilst preserving its ancient stonework for future generations to puzzle over.