Sviatoslav II of Kiev
Sviatoslav II Yaroslavich (1027–1076), a younger son of Yaroslav the Wise, received Chernigov when his father divided Kievan Rus among his sons in 1054. With his brothers Iziaslav of Kiev and Vsevolod of Pereyaslav he formed a princely triumvirate.
The triumvirate defeated Vseslav of Polotsk in 1067 but was routed by the Cumans on the Alta in 1068. In 1073, backed by Vsevolod, he drove Iziaslav from Kiev and ruled as grand prince until his death on 27 December 1076.