Island kingdom bounded to the west by the Marcher lordships and the (still contested) principality of Wales conquered by Edward I; English lordships included parts of modern south Wales (from southern Pembrokeshire through Swansea, Cardiff and on towards Gloucester in England); bounded to the north by the kingdom of Scotland, to the east by the North Sea and to the south by the Channel; included Somerset, Devon and Cornwall to the south-west. Population up to the Black Death of 1348-9 approximately 4 million souls.
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