NN was formerly part of the German Empire. In the German Empire, the place was called Grieben.
The place is now called NN and belongs to Poland.
Historical place name | Country | Administration | Time |
---|---|---|---|
Grieben | German Empire | Osterode i. Ostpr. | 1939 |
NN | Under Polish administration | Ostróda | 1945 |
NN | Poland | Ciechanów | 1992 |