An interesting, if too brief, article. Actually, this does not at all contradict the more prevalent claim of Spanish ancestry. It is all a matter of time. Ultimately, Irish origins trace back to the emergence of Caucasians in the area of the Baku Peninsula in present-day Armenia. From there, where did they go? What was their migratory route? Certainly, it went through North Africa; and, thence, to Spain. Except that, more correctly, we speak of the ancient Ibero-Celts. You must remember: those who sided with Hasdrubal and Carthage and met a terrible fate when Rome won. Rome was never kind to those who opposed it. Anyway, the Ibero-Celts - like most ancient peoples, did not follow today's clean and firm national boundaries. Many Ibero-Celts also resided in what is today France. And, in fact, their origins - like all Celts is traceable to the region now occupied by the Czech Republic. The variance in male and female chromosomes paints a clear picture: the early Eirean settlers were probably exclusively male. That is the norm for pioneering populations. Later, they mated with the local females. It is highly probable that they had much more on their side than farming. Such as better military organization (all males! - likely in a sib or pre-clan) and weaponry. That would explain their being able to brush aside the resident male population.