Mezue ahịrịokwu na-esonụ:
Agha Galicia-Volhynia, alaeze nke Galicia-Volhynia kewara n'etiti Poland na Lithuania. Na 1349 akụkụ Polish gbanwere n'ime ngalaba Ruthenian nke okpueze, ebe Duchy nke Volhynia bụ nke Prince Lubart. Site na ọnwụ nke Casimir nke Atọ Onye Ukwu, alaeze Poland gafere alaeze Hungary na ngalaba Ruthenian nke ndị isi Ruthenian na-achị, otu n'ime ha bụ Wladyslaw nke Opole.