I am looking at the population portraits of the Dodecad v3 results (all of which will be provided as a zip once I finish calculating averages), and I discovered an interesting presence of presumably Basque individuals in the 1000 Genomes IBS sample.
First, here are the Dodecad Spanish:
And, the Behar et al. (2010) Spaniards:
And, the HGDP French Basque:
Notice that they are composed almost entirely of "West European" and "Mediterranean" components.
Here is IBS:
Notice a few individuals that resemble Basques. I haven't found a description of the origin of the IBS individuals, but I would wager that a few Basque individuals are included, that resemble their French co-ethnics.