https://en.m.wikipedia.org/wiki/Kalevi_Wiik "Wiik suggested that at the periphery of the Indo-European language expansion, the Germanic, Baltic, Slavic, Celtic and Iberian languages were formed; they were Indo-European mixed with many elements from the languages of the hunters: Basque and Uralic. He claimed the Post-Swiderian people (originating from western Poland) as Finnic-Ugric, and the Saami as migrants from (Magdalenian) Western Europe who changed their original language,Basque, to a Uralic tongue.
Thus, Wiik proposed that eventually most of Europe was Indo-Europeanized as many of the Basque and Uralic speaking hunters adopted Indo-European languages. Only in the periphery of the European continent, in Iberia and in Northeastern Europe strong nuclei of hunters apparently adopted farming without being linguistically converted: their descendants are Basque- and Finnish-speakers" The origin is the Basque Country the legendary version not the official history.