I hope this gets to you, after 4 years of nothing..
I'm descended from Andrew Knauf. I'll give you our information anyway, just because it's neat to know. Thanks for the arrival date! I've been looking for it.
Andrew Knauf married Elizabeth Caspar (also from Germany...I'm unsure of the area/city) and they settled near Aurora, Illinois. Andrew died on 31 Jan 1939 and Elizabeth in 1932. They had 8 children: Andrew, Arthur, George, John, Carl, Katherine, Ella, and Frank. I have a picture of this family, if you're interested.
Frank was my great-grandfather. Frank married Celia Rosencranz, had seven children, one being my grandmother, and there I am.