At my other weblog, I have a long post on Irish DNA which I think will be interesting to readers of this weblog. The reason is that the big aspects aren’t really about Irish DNA, but the fact that ancient DNA is shedding new light on the mythology of the Irish people, which unlike other Northern Europeans was preserved rather than forgotten during Christianization (the indigenous and gradual nature of Irish Christianization probably explains this).
The authors found a high-status individual buried in a Neolithic mound who was the product of first-order incest (brother-sister or parent-child). This strongly suggests a very stratified society. But this is the incredibly interesting part:
The Brú na Bóinne passage tombs appear in Medieval mythology that relates their construction to magical manipulations of the solar cycle by a tribe of gods, which has led to unresolved speculation about the durability of oral traditions across millennia…Although such longevity seems unlikely, our results strongly resonate with mythology that was first recorded in the eleventh century AD, in which a builder-king restarts the daily solar cycle by copulating with his sister…Fertae Chuile, a Middle Irish placename for the Dowth passage tomb (which neighbors Newgrange), is based on this lore and can be translated as ‘Hill of Sin’ or ‘Hill of Incest’…
It seems clear here that the Irish had clear memories of the native Neolithic people and their practices, over 3,000 years after these people had been replaced by intrusive “Bell Beakers” who likely spoke Indo-European languages (perhaps, but not necessarily, Celtic). This is not surprising in light of other instances of long-term preservation.
But, it does suggest that the early Indian mythological cycles have embedded within them a fair amount of information, though it will no doubt be mixed in with narrative elaboration and fabulation.