I haven't indexed any matches or near matches for this Benedict Geser family. Even the spelling variations listed in the thread aren't well represented in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
An overlooked source in Milwaukee is the collection of "Declaration of Intent" records that were NOT completed/matched with a Petition of Naturalization. Indexes and early originals are at the Milwaukee County Historical Society, but not online. These brief forms may include a signature and birth date, entry date and port.
Baptism records for the Geser children may offer hints through sponsor. Browsing the church death register for the related years may show up other Geser names.
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007... helping to access our historic German-American culture.