"The Williams/Rosenthal's of Alexandria, Louisiana

I am searching for any information on my family the Williams/Rosenthal's of Alexndria, Louisiana. Am searching for Will Rosenthal who was a Afo-American Jewish man who married a native american woman named Nettie Williams in 1882. Their chidren were Taylor Rosenthal, Semmia Rosenthal, Dave Rosenthal, Kansas Rosenthal, Bessie Rosenthal, JoElla Rosenthal. Any information on any of these people would gladly appreciated.