Yuri II Boleslav

Yuri II Boleslav
King of Ruthenia
Reign1323–1340
PredecessorAndrew and Leo II of Galicia
SuccessorLiubartas
Bornc. 1305-10
Diedc. 1340 (aged c. 30)
SpouseEufemia (daughter of Gediminas)
HousePiast
FatherTrojden I of Masovia
MotherMaria of Galicia
King's seal of Yuri II of Boleslav

Yuri II Boleslav (Ukrainian: Юрій-Болеслав Тройденович, romanizedYurii-Boleslav Troidenovych; Polish: Bolesław Jerzy II; c. 1305/1310 – April 7, 1340), was King of Ruthenia and Dominus of the lands of Galicia–Volhynia (1325–1340). A foreigner and a Catholic by birth, he was the son of Trojden I, Duke of Masovia and a member of the Polish Piast dynasty. Highly unpopular in Orthodox Ruthenia, his murder prompted a war of succession, known as the Galicia–Volhynia Wars.