Richnau (Westpr.) was formerly part of the German Empire. In the German Empire, the place was called Richnau, Kr. Briesen (Westpr.).
The place is now called Rychnowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Richnau (Westpr.) | German Empire | Briesen | before the Versailles Treaty |
| Rychnowo | Poland | Wąbrzeźno | after the Versailles Treaty |
| Richnau, Kr. Briesen (Westpr.) | German Empire | Briesen (Westpr.) | 1939 |
| Rychnowo | Poland | Golub-Dobrzyń | 1945 |
| Rychnowo | Poland | Toruń | 1992 |