hoping you still do lookups.
I have a Johann Gottfried Lau and Karl Ludwig Lau marrying Warnke sisters on 25 March 1858 in Crystal Lake, Marquette Co. I also know my ancestor Christian Friedrich Julius Lau (their brother) married Anna Wilhelmina Tetzloff on 14 Nov 1859 in Westfield, Marquette. Curious about two things - is there a more specific mention of birthplace for Anna (besides Prussia) or any other info about her? The Lau brothers had a sister Sophia A. Lau that married a Julius C. Platt/Plath...but I don't kwow if they married in Wisconsin (ie. listed in book) or in Prussia.