Found out from Davis County website that Mars Hill Church and cemetery are undergoing a restoration project. Also learned quite a bit about the church, built during Hyrum's lifetime, probably 1850-1856 and probable attendance, closed during the war when 35 of its members enlisted (so were Hiram and his brothers members at the time? Do they have a list? They must have something to know the number...) It looks like a woman named Margret Thrall wrote about its history for the Wapello County historical society. Find their site! Then the church reopened after the war. I wonder if the restoration board would be interested in some of his history? Also pictures on that website. Also that it was likely used as a site on the Underground Railroad and also by John Brown to hide slaves, also that he may have preached there once. It was a Baptist church. This conflicts a little bit with the idea that Sarah was Methodist, but maybe her parents were not, or maybe they were just buried there because they lived close by.
The building methods the history site describes are also interesting because it is likely that Sarah would have been born in a cabin built the same way.
Davis county also has several Mormon trail sites, traveled by approximately 70,000 Mormons over about 15? years, and a reconstructed cabin.
Something on another tourist site about the DAvis County Civil War raid. Find out what happened.
Also, apparently, Davis county sports a good sized Amish population.
The Mormon trail was on territorial roads as far west as Bloomfield (Davis) where then it struck on onto old Pottawatamie trails, etc. This from a site about the Mormon trail.