This sounds to familar to me. My grandfather is Russel Duerr Jr., his father was Russel Duerr Sr. (deceased 20 years ago), his father my great, great, grandfather was Charles Duerr who immigrated here about this time you are asking about with several of his children. I don't know the children's names but my grandfather is really into the family tree info so I will e mail him tomorrow. You can contact me back at my office jennifer.l.eaken.lou2@statefarm.com. I don't want to give you any false hope but this way I know where I found this info later.