There is a part of Edinburgh called "Little France" where Mary Queen of Scots' retinue lived close by Craigmillar Castle. While there are strong historical connections between Scotland and France, however, there was never any significant settlement by French people in Scotland. No doubt nervousness by the English discouraged this and was, in fact, one of the driving factors in the Union of the Parliaments in 1707. There is possibly more chance of finding Scottish roots among French people as there have been Scots going there to fight for many centuries (on their side I should say).