"I am seeking anyone with information on Milwaukee, Wisconsin ENGEL, Theodore and Sophia, born in Germany about 1866 and 1871, respectively."
I've indexed over 250 occurrences of the name Engel found in local German newspapers. These include the clippings for the names Theo. & Sophia, and references to them in other entries, like the death of Theo. Jr.
More information available from compiler/editor:firstname.lastname@example.org
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950)