Oleg III Svyatoslavich (c. 1147–1204)[1] was a Kievan Rus' prince.
[1] He was prince of Vshchizh (1166–before 1175),[1] of Novgorod-Seversk (1200–1201),[1] and of Chernigov (1201/1202–1204).
She was a daughter of Prince Andrey Yuryevich of Suzdalia and his Cuman wife and may have been named Euphrosyne.
[citation needed] Oleg's second wife was a daughter of Prince Yuriy Rostislavich of Ryazan and may have been named Euphrosyne.
[citation needed] Oleg had three children: one whose name is unknown (died in 1204), a son named David (died in 1196), and a son named Ingor (died between 1211 and 1223).