My acestors - Arnold Jansen and his family - reportedly orginiated from the Dusseldorf area. As I understand it, this is is Western Prussia. They came to the US around 1850. I am looking for any information on Arnold or his family (his father's name is Mathias). Also is there a good reference for history of that region in the early and mid 1800s? I am interested in learning political / social reasons for his immigration to the US.