@Alien, I know, I wrote about it in my post, in case you managed to miss it...
and quite often
Could you say where they are then? I've managed to find another one:
pl.m.wikipedia.org/wiki/Kamieniec_(wojew%C3%B3dztwo_warmi%C5%84sko-mazurskie)
...and Kamieniec Ząbkowicki, but that's it:
pl.m.wikipedia.org/wiki/Kamieniec_Z%C4%85bkowicki