John, Sorry I can't help at present. I have seen various references to Hardiman Duke in various message boards, but I haven't been able to connect anything but feel he is related closely to these other Dukes in Conecuh County, my John M. Duke as well as supposed other brothers, Adam and Joel. It is thought they were the sons of Joel Duke, Sr. Many of the Duke clan from Conecuh County apparently migrated to Panola County, Texas, near the town of Carthage. I believe that is a little west or southwest of Shreveport, LA.