"Looking for information about Lorenz Fischer, born abt. 1850 in Germany and died abt. 1891 in Milwaukee. Married Louisa Wilhemine Krause in Milwaukee on Feb. 15, 1873. His father is Wenzel Fischer. Lorenz and Wilhemine had Louis Christian Fischer, Adolph Fischer and perhaps Peter Fischer. ..."
It looks like there are close matches to your Louise Krause Fischer and Wenzel Fischer (depending on their death dates) in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950). There are about 1150 occurrences of Fischer indexed from these papers so far.
For more specific information contact:
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007...