The Slavic languages have the name which is rendered as Sviatopolk in Russian, Świętopełk in Polish and Svatopluk/Svätopluk in Czech and Slovakian.
In 1015, his peaceful austerity was interrupted by the death of Vladimir I of Kiev, and the subsequent fratricidal war for the throne between Vladimir's sons Yaroslav and Sviatopolk, and Anthony returned to Mount Athos.
After Sipiagin's assassination (1902) Sviatopolk-Mirskii resigned as Assistant Minister but was persuaded to accept the position of Governor-General of the North-Western province that included gubernias of Vilna, Kovno and Grodno (that is modern-day Lithuania and most of the Belarus).