In case it's helpful to your research, the local German papers have family death notices for Casper Trautmann (referencing Marg. Baumbach), multiple notices for a Margaretha Trautmann, and multiple death notices and related clippings for a Moritz Trautmann. Other related items include multiple death notices for Eduard Sigfried Trautmann, 9 month old son of Casper and Marg., but published as "Sigmund Eduard" in another paper.
There are about 45 Trautmann entries found in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007 ...