Rogneda of Polotsk in the context of "Yaroslav the Wise"

The Principality of Polotsk (obsolete spelling: Polock; Belarusian: По́лацкае кня́ства, romanized: Polackaje kniastva; Latin: Polocensis Ducatus), also known as the Duchy of Polotsk or Polotskian Rus', was a medieval principality. The origin and date of the establishment of the state are uncertain. Chronicles of Kievan Rus' mention Polotsk being conquered by Vladimir the Great, and thereafter it became associated with Kievan Rus' and its ruling Rurikids.

The principality was supposedly established around the town of Polotsk (now in Belarus) by the tribal union of Krivichs. In the second half of the 10th century, Polotsk was governed by its own dynasty; its first ruler mentioned in the chronicles was the semi-legendary Rogvolod (?–978), better known as the father of Rogneda. The principality was heavily involved in several succession crises of the 11th–12th centuries and a war with the Novgorod Land. By the 13th century, it was integrated into the Grand Duchy of Lithuania.

Yaroslav I Vladimirovich (c. 978 – 20 February 1054), better known as Yaroslav the Wise, was Grand Prince of Kiev from 1019 until his death in 1054. He was also earlier Prince of Novgorod from 1010 to 1034 and Prince of Rostov from 987 to 1010, uniting the principalities for a time. Yaroslav's baptismal name was George after Saint George.

Yaroslav was a son of Vladimir the Great and Rogneda of Polotsk. Yaroslav ruled the northern lands around Rostov before being transferred to Novgorod in 1010. He had a strained relationship with his father and refused to pay tribute to Kiev in 1014. Following Vladimir's death in 1015, Yaroslav waged a complicated war for the Kievan throne against his half-brother Sviatopolk, ultimately emerging victorious in 1019.