Oleg Svyatoslavich was a prince from Kievan Rus' whose equivocal adventures ignited political unrest in the country at the turn of the 11th and 12th centuries. He reigned as Prince of Chernigov from 1097 to 1115, and was the progenitor of the Olgovichi family.
The image of Prince Oleg Svyatoslavich ("Gorislavich") on a princely coin.
Sviatoslav II Iaroslavich or Sviatoslav II Yaroslavich was Grand Prince of Kiev from 1073 until his death in 1076. He was a younger son of Yaroslav the Wise, the grand prince of Kiev. He is the progenitor of the Sviatoslavichi branch of Rurikids.
Sviatoslav (far right) with his family, 1073
A page from Sviatoslav's Izbornik of 1073