A lot of people in the north of france spoke Dutch/were Belgian. Some old people in french speaking still speak dialect dutch. Not the "new" generation. Frenc

A lot of people in the north of france spoke Dutch/were Belgian. Some old people in french speaking still speak dialect dutch. Not the "new" generation. French Flanders: https://en.m.wikipedia.org/wiki/French_Flanders https://en.m.wikipedia.org/wiki/French_Flanders Additionally, Wallonië is also french speaking and not dutch. So my guess is that it's pretty common ;)