Monhofen was formerly part of the German Empire. In the German Empire, the place was called Mohnhofen (Diedenhofen-Mohnhofen).
The place is now called Manom and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Monhofen | German Empire | Diedenhofen | before the Versailles Treaty |
| Manom | France | Moselle | after the Versailles Treaty |
| Mohnhofen (Diedenhofen-Mohnhofen) | German Empire | Diedenhofen | 1940 |
| Manom | France | Moselle | 1945 |
| Manom | France | Moselle | 1993 |