Interesting. My dad's family came from France and settled in Nova Scotia; our family got split by the Expulsion (Acadians were given the choice of swearing allegiance to the Crown or leaving). Most of those who left wound up in Louisiana (French-held at the time) and became known as Cajuns because "Acadien" in their accent sounds like "Cajun" to an anglo. To this day everyone in North America with my surname can be traced back to the same couple in Nova Scotia.
I know a few Cajuns and a couple Coonasses from the New Orleans area. I used to put fuel on tow boats in St. Paul and the towing trade seemed to attract a lot of Boudreaus, Heberts, etc. One time a tow boat got up to the St. Paul harbor a little late and couldn't get back down because of ice. Those lads had to rotate from NO to St.P and keep a couple of guys with the boat. Boy did they ever eat good.