In case it's helpful to your research, there was Marie Feith (née Muschinski) who died in Milwaukee in 1929; and an Eva Tiglman (née Feith), d. 1930. There were death notices in local German papers for them.
But even more obscure are entries for Franz & Joseph Veit who had letters held for them at the post office in Sept. 1863 postmarked from Schrudimer, Bohemia; referencing Anton Schuchanek. There are also Veit and Veidt entries in the ongoing project to index local German papers called "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007 ...