In case it's helpful to anyone's research, I've indexed some obscure entries found in local German papers for an Andreas Vogl who had a letter held at the post office from Geilsehöring (Jan. 1860). Also entries that match your Margarethe, d. 1885 (published as "Vogel"), but unlikely matches of death notices published for a "Mike Vogl" in 1926. There are over 300 combined Vogl & Vogel entries in the growing index.
"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 ... it's about German-American culture, not data.