Yaroslav Osmomysl was the most famous Prince of Halych from the first dynasty of its rulers, which descended from Yaroslav I's eldest son. His sobriquet, meaning "Eight-Minded" in Old East Slavic, was granted to him in recognition of his wisdom. Some scholars even assert that Yaroslav was fluent in eight foreign languages.
Biography
Son of Volodymyrko of Halych by his wife, a daughter of King Coloman of Hungary, he assumed the throne in 1153. His foreign policy tended towards the alliance with the kings of Hungary and Poland, and against the Grand Princes of Kiev, who supported Yaroslav's cousin Ivan Berladnik in his attempts to take possession of several towns bordering Volynia. After many years of warfare, Yaroslav managed to ensure Berladnik's expulsion to Byzantium. In 1164-65 Andronikos the cousin of Manuel I Komnenos, the Byzantine emperor, escaped from captivity in Byzantium and fled to the court of Yaroslav. This situation, holding out the alarming prospect of Andronikos making a bid for Manuel's throne sponsored by both Galicia and Hungary, spurred the Byzantines into an unprecedented flurry of diplomacy. Manuel pardoned Andronikos and persuaded him to return to Constantinople in 1165. Yaroslav of Galicia was persuaded to renounce his Hungarian connections and return fully into the imperial fold. As late as 1200 the princes of Galicia were providing invaluable services against the enemies of the Byzantine Empire, at that time the Cumans. The latter part of his reign was beset by family troubles. He fell in love with one Halychian woman, named Anastasia, took her as a concubine, repudiating his lawful wife Olga, the daughter of Yury Dolgoruky, in 1172. The powerful Halychian boyars, who were reluctant to accept Anastasia as their queen, instigated a popular uprising, which resulted in Anastasia's being burnt at the stake. Yaroslav was constrained to deliver the oath to live with Olga in peace but in next year had her expelled to her native Suzdal with a son, Vladimirko. He bequeathed his throne to a natural son by Anastasia, while the lawful heir Vladimirko had to content himself with Przemyśl for the beginning. Very soon, the illegitimate brother Oleg was killed and Vladimirko rose to the entire principality of Halych.
Yaroslav's daughter Eufrosinia and her husband Igor Svyatoslavich are central figures of the ancient Tale of Igor's Campaign. Yaroslav is mentioned in the text as a powerful and respectable potentate:
Reburial
Osmomysl's remains found their final resting place only recently after long period of disturbance. Originally, he was buried in the Assumption Cathedral in ancient Halych. In 1939 his stone sarcophagus was discovered by Ukrainian archaeologist Jaroslaw Pasternak, after his long search for the cathedral that was destroyed by Mongol-Tatar hordes and never rebuilt later. It appeared that the burial was looted earlier and Yaroslav's bones were found mixed with bones of a young princess of unknown family. The sarcophagus is displayed in the History museum of Ivano-Frankivsk. Trying to secure his archaeological artifacts from ancient Halych and drawings of the cathedral in Krylos before the Soviet occupation of Western Ukraine, Jaroslaw Pasternak hid them in an undisclosed location shortly after he emigrated to Germany, where he died without disclosing the secret place. The purported remains were found for the second time in 1992, hidden in the crypt of St. George Cathedral in Lviv, by archeologist Yuriy Lukomskyy. After anthropological study, the remains were reburied at the Lviv Cathedral. As a result of study a reconstruction of Yaroslav Osmomysl's face was made.
Y-DNA analysis of the remains
In 2016 a tooth from the skull used for Y-DNA analysis, which revealed that it was bearere of E1b1b1 haplogroup.
Issue
With his wife, Olga Yurievna of Suzdal, daughter of Prince Yury Dolgoruky he had four children:
Vladimir, Prince of Halicz, married to Boleslava, daughter of Great Prince Sviatoslav of Chernigov.
Eufrosinia, famous for her song in "The Tale of Igor's Campaign"; married in 1184 to Prince Igor Svyatoslavich of Chernigov.