Mysterious face seen in church wall

Almost hidden in the wall of Hope Bagot Church is a stone face - it can be found in the main wall about halfway down the porch roof. In fact there is another head on the other side of the roof although it has been almost obliterated. The origin of the heads is unknown but they are thought to be of celtic origin and they occur in many church building across the British Isles and Ireland. As you can see it's similar to the head at Temple Cronan in County Clare and that at Hope Church in Derbyshire. There are some who consider these heads as part of a head cult and many can be found where there is water. The holy well at Hope Bagot Church (and the fact that there appears to be a spring under the floor) lends credence to this. Interesting eh?