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The medieval documents - Bad Archaeology
Contemporary evidence? Owain Gwynedd (c 1100-1170) was a king of the north Welsh kingdom of Gwynedd and there is a late medieval Welsh document, Achau Brenhinoedd a Thywysogion Cymru, found in a number of early modern manuscripts and perhaps composed in the fourteenth century, which lists a son named Madoc. This is probably reasonable evidence …