I don't know why the ususal suspects haven't poured a lot of Mormon data into your query, but you can use https://familysearch.org/search
for a lot of your research.
There are possible matches to any of your postings in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950). But the index is not online, and it's a secondary source so a death date or range is helpful for a look-up.
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007 ...