Don't know if you ever got a lead in this search. I have information about your Michael Etzel.His first wife was my grandfather's sister Elizabeth Nauertz DOB 2MAY1887. They had three children Elmer, Irene and Fran. They were married 25 OCT 1911 in Brookfield WI.Lizzie died in the 1918 influenza pandemic, while pregnant with their fourth child.Katie Renner was married to Lizzie's brother Mathias Nauertz who died in November 1918, about a month before his sister Lizzie.Michael was left with three children and Katie Nauertz filled in helping with the 3 little ones aged 2,4 and 6. They eventually married and had 4 more children. Another Nauertz sister, Anna, was married to Michael's cousin Adam Etzel. They lived an N. 22nd St in Milwaukee, a few houses apart, in houses built by Michael and Adam who were carpenters.