Hi,my grandaddy is/was a Clark from the Kingsport area with his family his mother was a Emmert,so I dont know if your only on the Rocky Hill area but I can help if your looking at other regions of east tennesse
You might want to look at one place studies. I've done a one place study of my town, which I started by looking at families from the first census of the area, and trying to learn about them. For some of them, I've made Wikitree profiles. In some ways, it's a massive and ridiculous project; in others, it's fun and satisfying. You can start with either the Tennessee Project: https://www.wikitree.com/wiki/Project:Tennessee Here's the Knox County page: https://www.wikitree.com/wiki/Space:Knox_County%2C_Tennessee and on that page you can see that no one has done a specific profile on Rocky Hill. But you can take a look at others which have been done and maybe see if you can help with one of them to learn more about Wikitree.