Nace is on the 1940. It's another transcription boo-boo. He's in index as "Noel" Atchison. Image shows "Nace" but the person under him in next household is named Harold and the "L" runs up into "Nace".
In 1940 Nace is living in Benton area of Franklin Co IL with Clyde Trout (and Clyde's wife ect) it's Franklin Co, Benton 28-13 page 4 of 44.
Nace has listed himself (or whoever gave the taker the info) as 'widowed'...not uncommon for people who are divorced and/or seperated to do this...they rather felt I imagine that there was not need to spell their life story out to a stranger at the door. Census records can be full of unexpected listings and tidbits which is why the are used for a basis only and not as documentation. The residence of Nace in 1940 living with Clyde Trout ties in with the WW2 registration I mentioned in other posting of Clyde Trout being the person who would always know Nace's where abouts for contact info.