Just passing by. I knew these Koehls, Louis was my wife's grandfather. I was searching to find how Louis was related to old Fred Koehl who lived in Fairbury for a while. If you go to Adam Barrone's page you will find a list of family names. The Fred Koehl clan is discribed in detail, and Louis Koehl, who married a Zimmerman, is not a descendent of this Fred. However, I assume they are cousins and not yet listed at the site.