I am in possession of a copy of the Teays Chapel Cemmetery plot map. I can verify for you that there are four "Arnolds" buried in Teays. I do not know the condition of or even if there is a tombstone on these graves. The reason I am saying this is that the only name that shows on the plot is the last name which is not the case if the full name can be determined. It is not unusual in this cemetery to have missing or faded beyond recognization tombstones. There are no Hinkle's or Hastain's shown on the plot map.
I do not live very close to Teay's Chapel but I would be willing to drive down there sometime in the next few weeks to see what is there. Let me know if this is what you need.
Don