Kingdom of Galicia–Volhynia
The Principality or, from 1253, Kingdom of Galicia–Volhynia, also known as the Kingdom of Ruthenia or Kingdom of Rus', was a medieval state in Eastern Europe which existed from 1199 to 1349. Its territory was predominantly located in modern-day Ukraine, with parts in Belarus, Poland, Romania, Moldova, and Lithuania.
Source: Wikipedia — Kingdom of Galicia–Volhynia (CC BY-SA 4.0)