One online reference:
- we wsi Łukawiec pow. Lubaczów miejscowi Ukraińcy zamordowali 3 Polaków, w tym 20-letnią dziewczynę i 16-letniego chłopca
In the village of Lukawiec, Lubaczów, local Ukrainians murdered 3 Poles, including 20-year-old girl and 16-year-old boy.
stankiewicze.com does contain a lot of very useful information—I even found grandfather is listed in Warsaw's Pawiak prisoner deaths 1944
However I did notice that they are using the familiar and brutal image of children tied to a tree with barbed wire as an illustration of Ukranian nationalist crimes against Poles....
... I am not sure but I believe the distinguished historian of the Polish nationalist movement Dr. Marek Chodakiewicz has corrected the widespread misrepresentation and attribution of the image, describing the photo as being actually of the children of a lunatic mother who murdered her own offspring and tied them with barbed wire to a tree. A criminal act by an insane mother rather than a crime perpetrated by the Ukranian nationalists. I think the original photo is from the 1920's but wish I could find the Chodakiewicz reference for this again?