"I am trying to find the link between my Germany Ellers and the Milwaukee cousins. Can anyone help?"

Just a couple of Eller names indexed so far in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950). These are: Carl F., Heinrich (referencing Wörrstadt), John, Roman (photo!, married to Marie).
More info. available from compiler/editor:
gary.rebholz@gmail.com