I am J1
How can that be?
My family was in the Pas de Calais since the XV century, never moved from near Boulogne. Farmers. (well, the NAME was there)
In 1500, one Holuigue was Apostolic Notary, others were canons in St Bertin (St Omer).
The arabs never made it up there. Jews are a possibility.
Or maybe a specialist from the Fertile Crescent brought the new technology up north?
Suggestions wellcome, but J1 is 1.3% in Benelux, 0% in France .. I feel lonely!