Kamenka (Каменка) is the name of several hundreds locations in the former Russian Empire and Bulgaria; the list in Russian Wikipedia is incomplete.

History of Kamenka

(the links are related to different places).

• Kamenka Fortress
• Kamenka on the Dnieper River

The Geni projects on German Kamenka on Volga river are Kamenka, Каменка, Baehr, Bähr and Kamenka Ancestors and Descendants.