I have tried findagrave and billiongraves, and my 3 g grandfather is not in either of them, for any county! My initial source of information was a database I'd found years ago, stating he had died in Alexander County, IL. However, no proof of this was given. I recently was given a link to a Cairo newspaper dating from 1868 which states that Henderson Palmer (his given name was William, but in censuses he went by Henderson) was killed in a logging accident in Clear Creek Precinct. So, now, I'm back to Alexander County!