Contact me @ jd.mason@us.army.mil and I will give you all the info I have on CD Lang who is buried at the Liberty Cemetery down the road from the Langsdale Plantation. Also I can get you the number of the man living at the Plantation now and he can give you info also on CD Lang.
Most of the info I have is in my book "Shubuta Mississippi, Home of the Red Artesian Water" which I included the history of the plantation and the owners.