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The pasiegos are a group with a differentiated culture in northern Spain. It was suspected that they were descendants of Muslim people who were given a territory in a sparsely populated valley in Cantabria (Northern Spain). The genetic study has confirmed that.
No, it hasn't. Maca-Meyer et al. already dealt with the presence of this haplogroup among Cantabrians, and the evidence suggests that it has to do with much older population movements:
http://grupos.unican.es/acanto/aep/BolPas/Ann-Hum-Genet.pdf
"Taken together, Pasiegos and pooled Cantabrians stand out due to a high presence of North African lineages (E-M81 Y-haplotype and, to a lesser degree, U6, M1 and L2 mtDNA lineages). Compared to other North European populations they also share high frequencies of R-SRY10831b Y-chromosome lineage and of mtDNA lineages V and I. For the African input, it is tempting to propose an asymmetric sexual contribution in which males predominate. Although it could be true, this supposition should be regarded with caution, since the majority of North African mtDNA lineages are also present in Europe (Rando et al. 1998). There are, currently, two theories to explain this not negligible African input on the Iberian peninsula. For some, it is mainly the result of the historic Islamic occupation (Bosch et al. 2001; Pereira et al. 2000), whereas others, without totally denying this possibility, favour the bulk of this influence as having prehistoric roots (Gomez-Casado et al. 2000; Gonzalez et al. 2003). If the sexual asymmetry could be demonstrated the former hypothesis would be strengthened. In any case, the fact that this African influence similarly affects other Cantabrians and the lack of assigned Near East lineages in Pasiegos, rules out the hypothesis that this isolate was specifically founded by Moorish and Jewish refugees."










