Just two matches to your Kubicek surname in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
These are family death notices for an Antonia Kubicek (d. 1880, 23 yr.), survived by Joseph; and Anna Kubichek who died in 1943 (72 yr).
For more specific information contact:
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007... helping to access our historic German-American culture.