Elsewhere I have seen someone who has been lectured by the rather rude historian - he did not make such remarks inn her presence.

There does seem to be a curious attitude in Iceland (or at least from that historian) and the Faroes since the DNA surveys have been done, leading to a confusion that, in the Faroes, the men are descended from Vikings and the women from the British Isles (Ireland included). Cue stupid joke in the Faroes about the men stopping there because they did not want to go back home to their wives with their newly acquired women. Of course, both men and women are descended from both. I put one of the guides right on the Faroes, but not the sexist male one.

Presumably, the mitochondrial DNA links to Isles sources, and the Y chromosomes to Nordic. So the Celtic monks didn't make any DNA contribution (despite mixed houses and no great opposition to marriage) and Nordic women's mitochondria somehow didn't make much contribution either (which could happen randomly), though some are mentioned by name in the sagas.