re: When did the definition of creole change?

IIRC from my Louisiana History class in college, Louisiana Creoles were (as others have said), descendants of French or Spanish colonists, born in LA. They were white Creoles and mixed-race Creoles. I think among the social hierarchy at the time, white Creoles were considered the most upper class, as they had the heritage of Europeans but were born here. I remember reading Kate Chopin's "The Awakening" and she talked about white Creoles. If you Google "Louisiana Creole Whites" there's an article about Chopin and another study of Creoles from Yale which say similar things.

Not sure when exactly the use of Creole to mean just mixed-race people of European/African descent came about. Probably post Civil War.

ETA: I went back and found the links, in case anyone wants to read more on the Creole culture.
Loyola article on Kate Chopin
Yale article