"Nicolaus Isleb and Susanna Hill from Eisenach Tiefenort Germany. They married in 1852. They had four sons. John, Henry J. August and Phillip. They lived in Milwaukee Wisconsin ..."
Did your Nicholas Isleb die in Milwaukee in the 1890s? I've indexed multiple death notices from two German papers published in Milwaukee. His name also comes up in the 1850s (living on the Port Washington Road?) when he published lost livestock notices in the German papers.
The are about 55 occurrences of Isleb listed in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950). Some other surnames referenced with these Isleb entries include: Muenchow Ebel Siegfried Hagedorn Nieser
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007 ...