Gniadtken was formerly part of the German Empire. In the German Empire, the place was called Grenzhof.
The place is now called Gniadki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Gniadtken | German Empire | Neidenburg | 1938 |
| Grenzhof | German Empire | Neidenburg | 1939 |
| Gniadki | Under Polish administration | Nidzica | 1945 |
| Gniadki | Poland | Olsztyn | 1992 |