Książnica was formerly part of the German Empire. In the German Empire, the place was called Pfaffendorf.
The place is now called Książnica and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pfaffendorf | German Empire | Reichenbach (Eulengebirge) | 1939 |
| Książnica | Under Polish administration | Dzierżoniów | 1945 |
| Książnica | Poland | Wałbrzych | 1992 |