HI there. I came acrossed the Hennemann name and I am researching this name in my family tree. My GGG grandfather was Michael Hennemann they lived in Cook Cty Ill His father was John Hennemann mother Barbara Zecky from Germany, and had several brothers and sisters. Johanna, John,Adam,Phillip and Barbara just to name a few. Are we related? If so Please email me to get information. I also found Hennemanns in St Clair and wanted to know if they were related. June Schade and I are also mailing a gentleman in Champaign Ill that is a distant cousin of ours.