Ya - this is their 1930 census record. Their name was misspelled though. Nearly all of their records say Burkovich or Burkavitch (whereas my family used Borkovich and occasionally Burkavich).

I can find several towns in the area of Brestovac, Croatia named Kamenska and Kamenski Seovci, but the only two parishes there that I can find are Brestovac (which seems far away from these little towns) and Skenderovci. Neither parish seems to have births from people from the Kamenski villages (Skenderovci has a few here and there).

Do you know if there was another parish near Brestovac and Skenderovci?