Related, from 2020: "Population genomics of the Viking world" https://www.nature.com/articles/s41586-020-2688-8 https://www.nature.com/articles/s41586-020-2688-

Related, from 2020: "Population genomics of the Viking world" https://www.nature.com/articles/s41586-020-2688-8 https://www.nature.com/articles/s41586-020-2688-8 What I find most interesting, even in the early Viking age 700–800 CE there were people with southern European ancestry in Denmark and a surprising number with >50% by the main Viking age. Viking was more of an occupation than an ethnicity.