Boy did we luck out too! My youngest son Jeremy, found a very large monument with the name Sommer on it. (Kids can move around cemeteries so much easier than adults!) Sommer is Katherine's maiden name. Katherine does not have a marker on her grave but, Kim told me that she is buried in the Sommer family plot. Not only is Katherine buried there but so are fourteen other relatives! Here is the breakdown...
Katherine Ball, Julia Sommer-----Katherine's sister, Phillip J. Sommer----Julia's husband, Frederick J. Sommer and his wife Elizabeth Sommer, Jacob F. Sommer and his wife Phillipina Sommer, William J. Buis and his wife Margaret Buis and Elizabeth J. Eberhart.
Elizabeth Sommer, Anna Sommer, Frederick Sommer, Arthur Sommer and Ernest Sommer.
Wow! I took pictures of each and every marker. Of course I researched some dates of marriages and dates of death for everyone I could find. Once again I contacted Cynthia at Chicago Genealogy to copy as many of those death certificates and marriage certificates that she can find!
Searching Ancestry from my local library I was able to find many of these relatives on the Federal Census records. For instance, on the 1900 federal census Julia and Philip have two children Elsa (10yrs) and Philip (8 yrs). Frederick and his wife Elizabeth are also living with them. I believe that Frederick and Elizabeth are Philip's parents only because they had been married forty years in 1900 and Philip was 37 years old at that time.
I now have some work to do, putting all these relatives on my family tree! There's lots more research to do now as well, what with all these additional Sommer relatives and their descendants. Plus, I am not absolutely sure of how some of them connect to the others.