Langenau was formerly part of the German Empire. In the German Empire, the place was called Langenau.
The place is now called Łęgowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Langenau (Kr. Danziger Höhe) | German Empire | Danziger Höhe | before the Versailles Treaty |
| Langenau | Free City of Danzig | Danziger Höhe | after the Versailles Treaty |
| Langenau | German Empire | Danzig | 1939 |
| Łęgowo | Poland | Pruszcz Gdański | 1945 |
| Łęgowo | Poland | Gdańsk | 1992 |