Sommerau was formerly part of the German Empire. In the German Empire, the place was called Sommerau.
The place is now called Ząbrowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sommerau | German Empire | Rosenberg i. Westpr. | before the Versailles Treaty |
| Sommerau | German Empire | Rosenberg i. Westpr. | after the Versailles Treaty |
| Sommerau | German Empire | Rosenberg i. Westpr. | 1939 |
| Sommerau | German Empire | Rosenberg i. Westpr. | 1939 |
| Ząbrowo | Under Polish administration | Susz | 1945 |
| Ząbrowo | Poland | Olsztyn | 1992 |