You may want to consider the local German language newspapers in your Pichler and Kunkel family research in Milwaukee.
For instance there are death notices in these papers for a Steve Kunkel, survived by Cecilia (Pichler). Based on the year he died, Steve may have been a subscriber at that time? There are about 85 Kunkel / Kunkle entries or references found in the local resource "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
There are also about 35 Pichler entries or references in the most current version of the index ranging from 1860s-1930s. These include notices for Paul, Anton, Carl, Joseph, Catherine, Katharine, Caroline Clara, Louise, Theo.; a reference to the Austrian town Fischamend; photos included with clippings of 2 Pichler boys who served in WWI; and links with the names Guenther & Wertschnig. (I'm not researching these families; the index and newspapers are not online.)
I'm always happy to confirm entries for specific names in the index, but do not offer volunteer research in the German papers.
Gary Rebholz, originator/compiler/editor, Milwaukee Wis.firstname.lastname@example.org
Indexing Milwaukee's German newspapers continuously since 2007... helping family researchers collect evidence contemporary with their historic German-American families.