Wayside crosses and Celtic inscribed stones are found in Cornwall in large numbers; the inscribed stones (about 40 in number) are thought to be earlier in date than the crosses and are a product of Celtic Christian society. It is likely that the crosses represent a development from the inscribed stones but nothing is certain about the dating of them. In the late Middle Ages it is likely that their erection was very common. Since they occur in locations of various types, e.g. by the wayside, in churchyards, and in moorlands. Those by roadsides and on moorlands were doubtless intended as route markings. A few may have served as boundary stones, and others like the wayside shrines found in Catholic European countries. Crosses to which inscriptions have been added must have been memorial stone