I grew up in this area, and I will share one piece of info with you. During the timeframe you are referring to, much of this area was either very swampy or flooded. I grew up in Trumann, AR and we did not have cemetery. Most of the residents of that area are buried in Marked Tree, AR. My grandfather, who settled in the area in the very early 1900s told me stories of the groundwater actually pushing coffins out of the ground during intense rain. From my understanding, the only place in the area stable enough for burial was Marked Tree.