The Prince of Polotsk ruled the Principality of Polotsk within the realm of Kievan Rus' or within the Grand Duchy of Lithuania from the mid-9th century to 1307.
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 progen