Yaroslav Osmomysl child Vladimir II Yaroslavich
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 (Halych) 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 (also called Nastasia), 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 (Oleg, sardonically called Nastasyich by the populace), 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.
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