Davyd Sviatoslavich of Vitebsk
Davyd Sviatoslavich (died 1173) was a prince of Vitebsk and a son of Svyatoslav Vseslavich of Polotsk. Hagiography records him accompanying his sister Euphrosyne of Polotsk on her pilgrimage to Jerusalem between 1162 and 1169. He is thought to have fathered Prince Boris Davydovich.