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Rh in Morva Dinỻeu, or the Marsh of Dinỻeu. But we have evidence that the shorter form Dinỻe was also used, especially in the spoken languages, as early as the thirteenth century. It is interesting to add that there was another Dinỻe, called in the Red Book, where it is mentioned, Dinỻe Ureconn, which meant the Uriconian or Wrekin Dinỻe, in the present county of Salop; the longer name served to distinguish it from the one in Arvon.

Such are some of the facts connected with the history of the name Llew, which has been traced to the older form Lleu. The next step is to ascertain how this latter stands with regard to the Irish Lug, genitive Loga. Enough is known of the laws of phonology obtaining in the Welsh and Irish languages respectively, to leave us practically in no doubt as to the identity of the two names. Treating Lleu and Lug henceforth as one and