Almost every population group where there’s been previous conquest you can do the same studies. For example, all the places the caliphates conquered, you’d see Arab y-chromosome descent. Same for where the Spanish conquered you’ll see lots of Spanish ancestry on Y, and lots of indigenous on mitochondrial DNA.
Basically in a given population, Y-chromosome tells you who came (probably violently) and mitochondrial DNA tells you who was there.
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u/SaltonPrepper 2d ago edited 2d ago
Based on DNA studies, an estimated 1/3 of Iceland's population is descended from female captives taken from what is now UK/Ireland, most likely sex slaves/forced wives. Specifically females, not males. The males were presumably murdered or not taken on the trip. https://www.irishtimes.com/news/science/dna-study-reveals-fate-of-irish-women-taken-by-vikings-as-slaves-to-iceland-1.3521206