Does anyone know if there exists any documentation in an archive or something that may have records of deaths prior to the state requirement of 1882?

I am specifically looking for a David Denton, born 1817. I last found him in the Whiskey Run Twp. of Crawford County in the 1850 census with his wife Eliza Bolt. By 1860 both were dead. I am trying to figure out where they died and possibly buried. But it's been very difficult!!

All I know for sure is that they were in Crawford County, and owned 120 acres which were purchased in 1835, and they are in the 1850 census as well. David's brother lived in Whiskey Run in 1850, and their father lived in Orange County. David also purchased 40 acres in Harrison County, in 1838.

As late as 1854 I know they were still in Crawford County because their youngest child was born there.

Any suggestions?
Thank you.