Ruthenians
The English term Ruthenian, also Ruthene, also Rusyns, (Russian: Русины, Ukrainian: Русини, Руські, Rusyn: Русины); Latin Ruthenia, is a well established if sometimes obsolete exonym originally used for the people of Rus, primarily the medieval kingdom of Kievan Rus', comprising parts of modern-day Russia, Belarus, Poland, Slovakia and Ukraine. The term is culturally loaded and has various meanings in different contexts. For example, in 2008 a controversy arose accusing Ruthenian (Zakarpattia Oblast) archpriest Dmytro Sidor of the Moscow Patriarchy of anti-Ukrainian separatist activities.
Read more about Ruthenians.