These paintings surmounted three acutely-pointed arches, with small piers, and square on the side next the nave, but on the other side slender shafts with bell-shaped capitals, carved with bold round mouldings and deep hollows. Two corbels supporting the horizontal drip-stone over the west window were also clear and sharply cut; and the doorway on the south side had slender shafts and deep mouldings, in one of which is the dog-tooth moulding going even down to the ground on each side. This is still preserved in the entrance to the Boys’ School. These remnants date the original building for about the thirteenth century. It may have been due to King Stephen’s brother, Bishop Henry de Blois of Winchester, who is known to have raised the castle whose remains still exist on his manor of Merdon, where once there had been a Roman encampment. So far as his work can be traced, the first thing he would do would be to have a similar embankment thrown up, and a parapet made along the top, behind which men-at-arms would be stationed, the ditch below having a stockade of sharp stakes. In the middle of the enclosure a well was begun, which had to go deeper and deeper through the chalk, till at last water was found at 300 feet deep—a work that must have lasted a year or more. Around the well, leaving only a small courtyard, were all the buildings of the castle meant for the Bishop’s household and soldiers. The entrance to it all was probably over a drawbridge across the great ditch (which, on this side, was not less than 60 feet deep), and through a great gateway between two high square towers, which must have stood where now there is a slope leading down from the level of the inner court to that surrounded by a bank. This slope is probably formed by the ruins of the gateway and tower having been pitched into the ditch, as the readiest way of getting rid of them when the castle was dismantled afterwards. We are indebted to the late Sir John Cowell for the conjectural plan and description of the castle. As soon as the Bishop had completed this much he would feel tolerably safe, but he would not be satisfied. He could hardly have room in his castle for all his retainers, and he could not command the country from it, except towards the south; therefore his next work was to make an embankment and the ditch on the outer side of it. It was then an unbroken semicircle, jutting out as it were from the castle, and protecting a sufficient space of ground for troops to encamp. [Picture: Merdon Castle and Well, Hursley Park]