Note 7 — Chapter IV · Manx Folklore
Reading edition
The Manx word for the rowan tree, incorrectly called a mountain ash, is cuirn, which is in Mod. Irish caorthann, genitive caorthainn, Scotch Gaelic caorunn; but in Welsh books it is cerđin, singular cerđinen, and in the spoken language mostly cerdin, cerding, singular cerdinen, cerdingen. This variation seems to indicate that these words have possibly been borrowed by the Welsh from a Goidelic source; but the berry is known in Wales by the native name of criafol, from which the wood is frequently called, especially in North Wales, coed criafol, singular coeden griafol or pren criafol. The sacredness of the rowan is the key to the proper names Mac-Cáirthinn and Der-Cháirthinn, with which the student of Irish hagiology is familiar. They mean the Son and the Daughter of the Rowan respectively, and the former occurs as Maqui Cairatini on an Ogam inscribed stone recently discovered in Meath, not very far from the Boyne. ↑