I know what you mean.
I looked on the 1930 census and found what I think you found. The only thing was a daughter named Emma and a wife who looked as if the name was Eugenia. Is that the correct family?
Honestly, I don't know what section of Lee County, Union Township is in, but I didn't recognize any of the names that surrounding the above family that I mentioned. None of the names "rang a bell" as they say.
Do you know if there are other Roberts in Lee Couny that are related. The webmaster for USGenWeb for AR, Lee County was a Roberts. Just wondering if you all could be related.
Any additional info that you have would help me along.
Sue Moore
Marianna, Lee, AR