Ka cika wannan magana: An fara ambata sunan a littafin tarihin Poland na shekara ta 1321, Red Ruthenia shi ne sashen Ruthenia da Casimir Mai Girma ya haɗa da Poland a ƙarni na 14. Rus', Red Ruthenia ta rushe ta hanyar Grand Duchy na Lithuania (Gediminids), da Mulkin Poland (Piasts), da Mulkin Hungary da kuma Mulkin Ruthenia. Bayan da
Galician-Volhynia Wars, kusan shekaru 400 yawancin Red Ruthenia ya zama wani ɓangare na Poland a matsayin Ruthenian Voivodeship.