There is a Joan Luetzow in Milwaukee who is a grand-dame of the genealogy community & local DAR, and just an over-all mensch. I don't think she's posted on these message boards but is referenced in some messages.
I haven't indexed too many Luetzow & Lützow names in my index - about 40 entries or references to date. Some surnames connected to Luetzow are Meier Kersten & Leistikow.
"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... helping family researchers find their ancestors among Milwaukee's 99%.