The Wales conquered by the Norman barons lay to the east and south of the Wales turned into shires in 1284. It included the greater part of the valleys of the Clwyd, Dee, Severn, and Wye; and the South Wales coast from Gloucester to Pembroke. It remained in the possession of lords who were subject to the King of England, but who ruled almost like kings in their own lordships. The laws and customs of the various lordships differed greatly; sometimes the lord used English law, and sometimes Welsh law. The great ruling families changed much in wealth and power, from century to century. In Llywelyn’s time the most important were the Clares (Gloucester and Glamorgan), the Mortimers (Wigmore and Chirk), Lacy (Denbigh), Warenne (Bromfield and Yale), Fitzalan (Oswestry), Bohun (Brecon), Braose (Gower), and Valence (Pembroke). Llywelyn was the last prince of independent Wales. From that time on, the title is conferred by the King of England on his eldest son, who is then crowned. The present Prince of Wales also comes, through a daughter of Llywelyn the Great, from the House of Cunedda, the princes of which ruled Wales from Roman times to 1284. Of all the houses that have gone to make the royal house, this is the most ancient. XIII CASTLE AND LONG-BOW SO far I have told you very little about war, except that a battle was fought and lost, or a castle built or taken. War has two sides—attack and defence. New ways of attacking and defending are continually devised. When the art of defence is more perfect than the art of attack, the world changes very little, for the strong can keep what he has gained. When the art of attack is the more perfect, new men have a better chance, and many changes are made. The chief source of defence was the castle, the chief weapon of attack was the long-bow. Wales contains the most perfect castles in this country; it is also the home of the long-bow. From 1066 to 1284 England and Wales were conquered, and the conquest was permanent because castles were built. From 1284 to 1461, England and Wales attacked other countries, and the weapon which gave them so many victories was the long-bow. I will tell you about the castles first, about the Norman castles and about the Edwardian castles. The Norman castle was a square keep, with walls of immense thickness, sometimes of 20 feet. But if the Norman had to build on the top of a hill or on the ruins of an old castle, he did not try to make the new castle square, but allowed its walls to take the form of the hill or of the old castle; and this kind of castle was called a shell keep. The outer and inner casing of the wall would be of dressed stone, the middle part was chiefly rubble. At first, if they had plenty of supplies, a very few men could hold a castle against an army as long as they liked. These were the castles built by the Norman invaders to retain their hold over the Welsh districts they conquered.