[JohCol]

A few points:

-I agree Picts were likely not at all related to Celts;
- The incoming Anglo-Saxons, from coastal Frisia and Denmark, displaced the elite of the celticised blonde population of England which was already related to their North Sea cousins, and in turn anglicised the mass of the population; point being the blond element of celtic britain and the blond saxons were genetically related while Doggerland still existed.
- As for the Norse vikings of Dublin: no genetic trace remains of them in Ireland, and the Norwegians are not a particularly blonde people; the Norse of Dublin were driven out with their wives and townies to found Iceland, where 50% or more of the population is genetically British...

[Heatseeker]

...50% or more of the population [of Iceland] is genetically British.

I didn't know this - can you point me to a source about it online?