MISLAVSKIJ, SAMUELE SIMEONE GRIGOREVIČ. — Born at Pološek on 24 May 1731, died at Kiev on 5 January 1796. In 1742 he entered the Ecclesiastical Academy of Kiev as a student. In 1754 he took monastic vows under the name of Samuele, but soon returned to the Academy to teach Latin grammar, poetry, rhetoric, and philosophy. In 1761 he was named rector of the Academy; yet already the following year he was in St Petersburg, where his oratorical talent won the favour of Empress Catherine II. On 28 December 1768 he was elected Bishop of Belgorod. After occupying several other sees, on 22 September 1783 he obtained the metropolitan see of Kiev, which he held until his death.
As bishop and metropolitan he carried on extensive activity to draw the Uniates of Volhynia and Podolia into the Russian Church. At the same time he constantly protected the Kiev Academy and devoted himself to theological work.
In 1774 he published in Königsberg a Latin treatise against the “Filioque,” a work by the Calvinist convert to Orthodoxy, Adam Zornikov. He also edited the theological writings of Theophan Prokopovich (Leipzig 1782), completing the treatise on the procession of the Holy Spirit and adding a third volume. Later he composed a compendium under the title: Dogmata praecipua fidei orthodoxae catholicae et apostolicae Ecclesiae Orientalis, creditu maxime necessaria pro adipiscenda aeterna salute.