Sorting it all out

I don't have much information for Stella L.  I have birth month/year/state from the 1900 census and I know her siblings/parents.  Well, I guess I know more than I though.  :) 

I'm trying to find her marriage information and any children she may have.  As I'm unable to find an obituary for her, I decided to check other trees online to get information to verify.

I found three husbands for her.  Russell, Elmer and Adam.  I found her on the 1920 and 1930 census with Elmer and one child.  I found the child's obit.  His only survivors are nieces and nephews.  That means he must have a deceased sibling, or more.

I determined Adam was married to a different Stella as I found Adam's daughter's obituary.  Her mother is Stella L but a different maiden name. 

I found Russell and Stella in 1940's city directories, but no census records of them together.

I cannot find her on the 1940 census, nor can I find her son.  Frustration.

I found Russell on the 1940 census (if it is the same Russell - in the right area) and he is single and living with the OTHER Stella!  She is listed as married but the husband is not listed on the census.

Now I'm thinking my Stella did not marry three times.  The OTHER Stella married twice.

Stella has several siblings.  I hope to gather more information when I obtain their obituaries.  How many more children did she have?  Where are they?