Svyatoslav Vseslavich of Polotsk 1064 - uncertain Parents NN Vseslav of Polotsk Children Vyachko Svyatoslavich Euphrosyne of Polotsk Vasilko Sviatoslavich Gradislava Sviataslavna Siblings David Vseslavich of Polotsk Gleb Vseslavich Rostislav Vseslavich of Polotsk Rogvolod Vseslavich Roman Vseslavich of Polotsk Partners Sofya Monomakh