Szlachtowa and Jaworki are the two westernmost Ruthenian villages in Poland, which formed the so-called Szlachetska Rus until the expulsion of the Ruthenians in 1944-1947. Both villages (now parts of Szczawnica) have preserved Greek-Catholic churches with iconostases, but they are maintained by Roman Catholics. Apart from the names of the apostles in the frescoes in Jaworki, I found the strongest presence of Eastern Slavic in the inconspicuous chapel at the end of Jaworki – the Our Father in Ukrainian, in two different versions. One is sort of archaic perhaps someone will know more.