There are several 'Warstones' within the West Midlands....probably boundary stones, as suggested earlier. I recall that the one in West Bromwich (Warstone Road/Hall) might also be a corruption of West-ton ... the 'settlement in the West' etc....simply a parish demarcation (same thing?). However, if that were the case, we'd have North-ton, East-ton and souths-tons too....are there any? Some believe that 'Wassum' is another corruption (or original?) of the same. I once heard that war-stones were the local levying points in time of war - where the 'levy' would meet prior to joining up with the main army etc. Again, this is probably the same as a 'boundary' stone....a common sense rallying point.