"Hmmm, can't remember a single ethnic member of any Southern Rock group, Again maybe I missed it but I can't remember a single non white member of any of the big Southern Rock groups."
You obviously never paid attention to the rhythm section of the Allman brothers band. Also, I believe that all the members of Blackfoot (Train, Train) were native americans. Finally, I believe that Skynerd had a female african american back up singer the last year they toured.
And don't forget Phil Lynott of Thin Lizzy, had he not OD'd they would have been on the list of big Southern Rock bands, their one album is still one ofthe best of the genre.