I've indexed multiple family death notices found in the local German papers for a Michael Gleisner / Gleissner that appears to be a match for your Michael Sr. There are also entries for a Magdalena Gleissner.
The other surnames in your posting: Schuh, Forster, Fuhrmann, Zausch, Berghammer, Salzer are also found in the index "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
There are about 60 Gleisner & Gleissner entries in the current, growing data.
Indexing Milwaukee's German newspapers since 2007 ...