Carved in relief and positioned to the north of the porch entrance, the head depicts a male figure with tightly cropped hair, an exposed forehead, oval-shaped eyes, a triangular nose, a slit mouth, and ears just visible beneath the hairline. It is a precise, almost austere piece of work, and it arrived at its current location by a roundabout route.

The head originally served as a corbel, a projecting stone bracket used to carry weight, and was positioned at the base of the springing for a rib-vaulted arch or roof, a construction technique common in medieval ecclesiastical buildings where curved stone ribs fan outward from a single point. Two of those ribs can still be seen rising from the back of the carving. The head almost certainly came from the Dominican friary that stands just twelve metres to the south, a foundation dating to the thirteenth century. When the Roman Catholic church was later built directly on the footprint of the friary's western range, carved fragments from the older structure were absorbed into the new building. This head and two companion carvings were set into the east gable, but the church's external render may be concealing further medieval stonework within the fabric of the walls, its extent unknown.