Yuri II Boleslav
| Yuri II Boleslav | |
|---|---|
King's seal of Yuri II of Boleslav | |
| King of Ruthenia | |
| Reign | 1323–1340 |
| Predecessor | Andrew and Leo II of Galicia |
| Successor | Liubartas |
| Born | c. 1305-10 |
| Died | c. 1340 (aged c. 30) |
| Spouse | Eufemia (daughter of Gediminas) |
| House | Piast |
| Father | Trojden I of Masovia |
| Mother | Maria of Galicia |
Yuri II Boleslav (Ukrainian: Юрій-Болеслав Тройденович, romanized: Yurii-Boleslav Troidenovych; Polish: Bolesław Jerzy II; Latin: Georgius; c. 1305/1310 – April 7, 1340), was a prince and Dominus of Ruthenia (Latin: natus dux et dominus Russiae) in 1325–1340. He was the son of Trojden I, Duke of Masovia, a member of the Piast dynasty and the grandson of Yuri I of Galicia. His murder prompted a war of succession, known as the Galicia–Volhynia Wars.