NN was formerly part of the German Empire. In the German Empire, the place was called Mohrenau.
The place is now called NN and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Murzynowo | Russian Empire | Lipno | 1914 |
| Skarzyn | Russian Empire | Lipno | 1914 |
| Murzynowo | Poland | Płock | 1919 |
| NN | Poland | Płock | 1919 |
| Mohrenau | German Empire | Schröttersburg | 1939 |
| Murzynowo | Poland | Płock | 1945 |
| Skarzeń | Poland | Płock | 1945 |
| Murzynowo | Poland | Płock | 1992 |
| NN | Poland | Płock | 1992 |