It is further to be remarked that moated mounds corresponding precisely in pattern to those in England, are very numerous in Normandy. In size they vary within much the same limits. All have or had a proper ditch, some, as Briquessart and Des Olivets, stand in the centre of the court, some at one end, others on the edge. The court is sometimes circular, most commonly oblong, very rarely indeed rectangular. The outer enclosures have their ditches, which communicate with those of the inner defences. M. de Caumont gives a list of fifty-four of these mounds, within a radius of sixty miles from Caen, and since he wrote many more have been observed. These also were, from an early period, the seats of great landowners, and from very many of them came the knights and barons who accompanied William to England, and there settled in posts very similar. Sir F. Palgrave gives a list of 131 of these fortified residences in the Cotentin, the Avranchin, and the Bessin, which includes only six of those mentioned by de Caumont. A large number of those earthworks seem never to have had, at any time, defences of masonry. Others, upon the mounds, had Norman shell keeps. Besides the British theory, these mounds have been claimed as sepulchral. It is of course possible that such mounds as Arundel or Marlborough may have been originally sepulchral, and therefore older than their defensive additions. To few if any has the crucial experiment of opening them been applied; but this is not a very probable explanation, and could certainly not be applied to those mounds as a class. Among many other reasons for taking this view, it may be observed that sepulchral mounds are always artificial, whereas moated mounds are often natural, and still more frequently partly so. No one could suppose Hawarden, or Dunster, or Montacute, to be sepulchres, and yet these are as much moated mounds as Arundel and Tonbridge. Moreover, sepulchral mounds are not often placed where a defensive work is obviously needed, and most rude nations are superstitious, and would object to dwell upon or around a grave. The Tynewald in Man, Cwichelmsley Knowe in Berkshire, and a work upon the Clyde in Lanarkshire, are the only known sepulchral mounds which have been employed for other purposes, and of these the two former are judicial, not residential. The barrows round York, though smaller than most burhs, are big enough to have carried residences, but do not appear to have been so employed. Moreover, the common testimony of the country has generally given to the moated mounds some name, such as Castle Hill or Burh, indicative of their military origin. It has been observed that moated mounds are usually near the parish church. This might be expected, since the parish, like the manor, was usually a private estate, and the church was originally provided by the lord for the accommodation of his tenants and himself.