Originally Posted by
Token
Even though it was long time ago, if the people from these zones kept marrying between themselves (which is very likely, people didn't moved too much in the past), the admixture percentage must have stabilized at some point. Something similar can be seen among Bavarian/Langobardic-speaking Northern Italians, who still preserve Germanic admixture together with larger lenghts of homozygous genotypes (inbreeding), even though the admixture event dates to the 11th century and possibly much earlier. I'll test one of those Varzim fishermen personally in my next trip to Portugal, geneticists are too lazy debating the PIE homeland.