My Grandparents came from what is now S.E. Poland (Galicia) in 1908-1912. They are listed as "Ruthenian" on passenger lists. Several relatives went back and forth several times (although they did not), and we have been able to establish a network of related villages centered around Ustrzki Dolne, from which they came.
Since I have been doing my research and finding a few DNA relatives, I have learned that the 4 ethnic groups who were "relocated" at least 3 times from that part of (now) Poland included ethnic Ukrainians, Boykos, Hutsuls, & Lemkos. Because I found DNA relatives who were Lemkos, I thought they were, too. But, since then, I have found another DNA relative who states they were from the Boyko subgroup. The fact that they were relocated to internment camps for WW I, WW II, and when oil was discovered in that part of Poland in the 1950s, continues to make searching for any living descendants who may have stayed behind, next to impossible!
It would be so wonderful to have a concerted effort to untangle these histories and the records which may support them and connect us.