Was there a Joseph Sr. (& Jr.) in your Pfeil family? There was a Joseph Pfeil Sr. who died in Milwaukee in 1923. His family placed notices in the local German language newspapers. But I don't see an entry for a Bertha Bock Pfeil in the index. There are about 100 occurrences of Pfeil indexed in the ongoing effort.
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
For more specific information contact:
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007... helping to access our historic immigrant culture.