Oleg Yaroslavich was born 1163 to Yaroslav Vladimirovich Osmomysl (c1135-1187) and Nastaska Chagrovna (c1140-1171) and died 1188 Halych, Halych Rayon, Ivano-Frankivsk Oblast, Ukraine of unspecified causes. Charlemagne (747-814), Alfred the Great (849-899)/s, Charlemagne (747-814)/s.
Oleg Yaroslavich (date of birth unknown - mind. 1188 , Galich ) - Prince of Halych (1187-1188), a bastard son of Prince of Halych-Volhynia prince Yaroslav Vladimirovich Osmomysl and his mistress Nastaska, also known as Anastasiya.
After the breakup of Yaroslav Osmomysl with his wife Olga, the daughter of Yuri Dolgoruky , she was forced in 1170 to flee with their only son Vladimir. At this time, Yaroslav preferred Nastaska's son Oleg over his legitimate son Vladimir.
Dying, Yaroslav bequeathed the reing of the Principality of Halych, bypassing the legitimate eldest son Vladimir, to the side younger younger beloved son Oleg, and gave Vladimir the Principality of Przemysl. But as soon as Yaroslav Osmomysl died, Vladimir Yaroslavich with the boyars broke the oath given to the dying prince, ousted Oleg from Halych and began to reign on the throne of Halych.
250px}Boyars of Halych drag Anastasya, the lover of prince Yaroslav Osmomysl to burn her on a stake. Drawing by Klavdia Lebedeva
Oleg fled to Ovruch to ak for help from Ryurik Rostislavich. The Russian chronicle does not mention additional information about Oleg Yaroslavich. However, in Polish sources there is information that Oleg, not having received help from Ryurik, went to the Polish king Casimir and went with him against Vladimir Yaroslavich. In the battle that took place, Vladimir was defeated and fled to Hungary (Russian sources report that Vladimir fled as a result of the rebellion of the Halych boyars, dissatisfied with his prince, who did not like to engage in public affairs, but preferred drinking). Oleg began to reign in Halych. But he was soon poisoned, after which the boyars called on the reign of Roman Mstislavich .
Siblings
| Name | Birth | Death | Joined with |
| Oleg Yaroslavich of Halych (c1163-1188) | 1163 | 1188 Halych, Halych Rayon, Ivano-Frankivsk Oblast, Ukraine | |
Residences
Footnotes (including sources)
