Note 22 — Chapter VI · The Folklore of the Wells

I do not profess to see my way through the difficulties which the probable etymological connexion between the names Setantii, Setanta, Seithyn, and Seithennin implies. But parts of the following string of guesses may be found to hold good:—Seithyn is probably more correct than Seithin, as it rhymes with cristin = Cristyn (in Cristynogaeth: see Silvan Evans’ Geiriadur, s. v., and Skene’s Four Ancient Books, ii. 210); and it might be assumed to be from the same stem as Seizun; but, supposing it to represent an earlier Seithynt, it would equate phonologically with Setanta, better Setinte, of which the genitive Setinti actually occurs, as a river name, in the Book of the Dun Cow, fo. 125b: see my Hibbert Lectures, p. 455, and see also the Revue Celtique, xi. 457. It would mean some such an early form Setn̥ti̯o-s, and Seithenhin, another derivative from the same stem, Setn̥tīno-s. But the retention of n before t in Setinte proves it not to be unconnected with Seithyn, but borrowed from some Brythonic dialect when the latter was pronounced Seithn̥ti̯o-s. If this be anywhere nearly right one has to assume that the manuscripts of Ptolemy giving the genitive plural as Σεταντίων or Σεγαντίων should have read Σεκταντίων, unless one should rather conjecture Σεγταντίων with cht represented by gt as in Ogams in Pembrokeshire: witness Ogtene and Maqui Quegte. This conjecture as to the original reading would suggest that the name was derived from the seventh numeral sechtn̥, just as that of the Galloway people of the Novantæ seems to be from the ninth numeral. Ptolemy’s next entry to the Harbour of the Setantii is the estuary of the Belisama, supposed to be the Mersey; and next comes the estuary of the Σετεία or Σεγεία, supposed to be the Dee. Now the country of the Setantii, when they had a country, may have reached from their harbour near the mouth of the Ribble to the Seteia or the Dee without the name Seteia or Segeia having anything to do with their own, except that it may have influenced the latter in the manuscripts of Ptolemy’s text. Then we possibly have a representative of Seteia or Segeia in the Saidi or Seidi, sometimes appended to Seithyn’s name. In that case Seithyn Saidi, in the late Triad iii. 37, would mean Seithyn of Seteia, or the Dee. A Mab Saidi occurs in the Kulhwch story (Mabinogion, p. 106), also Cas, son of Saidi (ib. 110); and in Rhonabwy’s Dream Kadyrieith, son of Saidi (ib. 160); but the latter vocable is Seidi in Triad ii. 26 (ib. 303). It is to be borne in mind that Ptolemy does not represent the Setantii as a people in his time: he only mentions a harbour called after the Setantii. So it looks as if they then belonged to the past—that in fact they were, as I should put it, a Goidelic people who had been conquered and partly expelled by Brythonic tribes, to wit, by the Brigantes, and also by the Cornavii in case the Setantii had once extended southwards to the Dee. This naturally leads one to think that some of them escaped to places on the coast, such as Dyfed, and that some made for the opposite coast of Ireland, and that, by the time when the Cúchulainn stories came to be edited as we have them, the people in question were known to the redactors of those stories only by the Brythonic form of their name, which underlies that of Setanta Beg, or the Little Setantian. Those of them who found a home on the coast of Cardigan Bay may have brought with them a version of the inundation story with Seithennin, son of Seithyn, as the principal figure in it. So in due time he had to be attached to some royal family, and in the Iolo MSS., pp. 141–2, he is made to descend from a certain Plaws Hen, king of Dyfed, while the saints named as his descendants seem to have belonged chiefly to Gwyneđ and Powys. ↑