Rubuta ci gaba ga wannan sakin layi - Shi ne shugaban masu shirya makirci a cikin Ottoman Bulgaria, a Tarnovo. A shekara ta 1686 ya tafi Rasha, da niyyar samun goyon baya a cikin tawaye. A Moscow ya sadu da Shugaban Cocin Orthodox na Rasha Joachim kuma ya roƙe shi taimako. An tabbatar da yarjejeniyar ta hanyar alkawarin tsakanin Rostislav da 'yar'uwar uban gidan, Maria Dubrovska. Bayan fara yakin Rasha da Turkiyya (1686<unk>1700)
A cikin karni na 16, tawaye ya ɓarke da wuri a tsohuwar babban birnin Bulgaria na Tarnovo. Rostislav ya koma Ottoman Bulgaria, amma sojojin Ottoman sun fi yawa kuma an murkushe tawayen. Rostislav ya ji rauni sosai, ya isa gidan sufi na Rila, inda limaman suka ceci ransa. Bayan kasada da yawa ya koma Moscow, inda daga karshe ya auri Maria Dubrovska kuma ya ba da tushen dangin masarautar Rasha Saveliev<unk>Rostislavich.