"In Louisiana you were considered to be of ethinic african origins if one of your greatgrandparents were of african decent. You were a Quadroon."
Just a small point of correction. If one of your great grandparents was of African descent, you would be an octoroon. A quadroon would have one grandparent of African descent, or two great grandparents. There were also mulattos, griffes, and a whole very specific caste system in place.