re: When did the definition of creole change?

The definition of creole is a person who can trace direct lineage to one of the original Spanish or French colonists (i.e. not Cajuns by way of Canada or Islanos by way of the Canary Islands). Because Spanish and French often inter-married (or kept mistresses) with blacks far more often than did their Anglo counterparts, many many blacks (especially in Southwest LA, the River Parishes, and New Orleans) are creole. In fact, there are more black or mixed "creoles" than light skinned creoles due to the prevalence of such activities especially prior to the Louisiana Purchase.