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Rh been tampered with by popular etymology, and its ordinary form is perhaps less to be relied on than the rarer ones of Telessin, or Telyessin. What it may have exactly meant, we know not; but it is clear that it is a compound, and it is probable that the second part should be treated as essin or eisin, which I would equate with the name of the great mythic poet of the Goidels, Ossín, better known in English in the form of Ossian, which it has taken in Scotland. The same view expressed in another way would be that Ossín is the reduced or de-compounded form of a longer name corresponding to the Welsh Telessin, or Telyessin. I would, however, go beyond this verbal equation, and regard Taliessin and Ossín as representing, in point of origin, one and the same character belonging to an earlier stage of Celtic mythology. On the Welsh side, Taliessin is Gwïon re-born, while on the Goidelic side Ossm is the son of