"... Joseph C. Fischer who married Margaret Schafer/Schaefer in 1903, and settled in Milwaukee, WI."
I've indexed over 1100 occurrences of the name Fischer in the local resource called "Milwaukee's German Newspapers; an index of death notices and related items". This German-American family research project covers the years 1844-1950 (also 21 entries of the spelling "Fisher).
There are over 50 entries for Jos. or Joseph Fischer, including a Joseph C. Fischer (1934) & about 25 Margaretha Fisher entries.
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The indexing has continued since 2007 ...