My great grandparents were Daniel Rosentreter, Sr. and Marie Luise Wellk Rosentreter. My grandfather, Gustav Herman Rosentreter was the oldest of eleven children. Gustav emigrated to the U.S. and settled near North Platte, NE. His name was changed to Rosentrater upon entry to the U.S. Three of Gustav's siblings, Martin, Otto, and Sophie also come to the U.S. Martin and Sophie retained Rosentreter and settled in the Augusta, WI area. Otto Rosentrater settled near Paxton, NE. I am trying to learn what happened to Gustav's siblings who did not emigrate. I also want to visit Czarnkow and the surrounding area. Are there Prussian cemeteries? Has anyone traveled there who can tell me what I might expect to find?