They probably do. The migration could have been as far back as 15,000 years, and the Basques and Celts were both pre Indo-European.
"The Welsh and Irish Celts have been found to be the genetic blood-brothers of Basques, scientists have revealed.
The gene patterns of the three races passed down through the male line are all "strikingly similar", researchers concluded.
Link BBC Ethnic links: Many races share common bonds Basques can trace their roots back to the Stone Age and are one of Europe's most distinct people, fiercely proud of their ancestry and traditions.
The research adds to previous studies which have suggested a possible link between the Celts and Basques, dating back tens of thousands of years".
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