If I am at the place I'll take some photos or ask some people, no problem.

WW2 ended in 1945, later on there were fights involving Ukrainian nationalists - bloody and cruel mostly targeted at civilians.
A book could be written - and many have. If you cannot find anything yourself on the Net I'll try to help you with some resources in English.

Metryki Józefińskie - briefly speaking it is the first in Poland (late 1780s) kind of land register or katastral records and according to Wikipedia that's the source of information about the land-owners in the area on the base of which they prepered the list of residents.
I don't have the foggiest idea if it is available online and how easy it is to find it. But we can try.

In a moment I'm leavinfg for the Bieszczady and going to be back on Monday...with some info I hope

vm