[2] It arose comparatively recently, after the beginning of the European Bronze Age, and is mostly prevalent in the population of the Pyrenees region.

In 2000 Rosser et al., in a study which tested 3616 men in various populations[3] also tested for that same marker, naming the haplogroup Hg22, and again it was found mainly among Basques (19%), in lower frequencies among French (5%), Bavarians (3%), Spanish (2%), Southern Portuguese (2%), and in single occurrences among Romanians, Slovenians, Dutch, Belgians and English.

[7] In a larger study specifically of Portugal in 2006, with 663 men tested, Beleza et al. showed low levels of this haplogroup ( described in the paper as R1b3f) in all the major regions, from 1.5%-3.5%.

[9] According to an "analysis of the R1b-DF27 haplogroup" published in August 2017, SRY2627 (M167) appeared 3,458 years before present in Spain (Aragon).

García-Fernández, Carla, et al. "Y-chromosome target enrichment reveals rapid expansion of haplogroup R1b-DF27 in Iberia during the Bronze Age transition."