Great article that discusses the Creole and Cajun labels indirectly.
Some quotes from article:
"Through time there has been a trend toward homogenization, real and
imagined, within Louisiana's French populations into a broad Cajun/Creole
dichotomy." -Rocky L Sexton. Ethnology. Pittsburgh: Fall
1999.Vol. 38, Iss. 4; pg. 297, 17 pgs
http://www.tlcinstitute.org/Tradition.pdf