Regarding the 1920 and other census': People were listed where they were staying, or visiting sometimes -- not necessarily where their home base was. And, with past census' I find that many were missed, probably they weren't home at the time and the census taker didn't bother to go back and look for them. In some cases I know they were their entier lives, but I didn't find them for 20 years! You could try a surrounding county, especially where one of their children lived. They might be listed there. Ethel Beard Simons