Unbeknownst to me, the Library of Michigan, and it's Genealogy Section is just a few minutes away from me.
Here's what I found so far...
St. Felix Roman Catholic Cemetery, (Pinnebog) Kinde MI
Schalz, Mary A.20 Dec 1890-22 Feb 1985
I think that Mary is my Great Aunt, as I recall visiting my fathers 'Aunt Mary' years ago as a child.
I have also found a record (internet) concerning one J. Adam Schalz who was naturalized in Huron Co.
My intentions at this moment, are to do an online search of Records that are on file at the library, and then locate the detailed data, as the Library contains a huge amount of printed records, histories, obits, and darn near anything else one can think of.
The Staff are very helpfull, and I was only armed with the Locations of two Cemetery Record books. I'll do much better next time.