"... Rebhahn and Motschenbacher families. I am great-great granddaughter of George Motschenbacher (b. 9 Apr 1927; d.18 Sep 1896 in Clay County, MN) and Kunigunde Rebhahn (b. 18 Apr 1836; d. 9 May 1923 in Clay County, MN). They were married in Old St. Mary's Catholic Church, Milwaukee, WI in October of 1855."
In case there were other of your Rebhahn relatives remaining in Milwaukee, I've indexed about 30 occurrences of the name in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950). These entries range from the 1880s-1920s.
Indexing Milwaukee's German newspapers continuously since 2007 ...
Gary Rebholz, compiler/editor