Svyatoslav III Igorevich

Sviatoslav III Igorevich (1176 – September 1211) was an Olgovichi prince. In October, 1188 he married Yaroslava Rurikovna, a daughter of prince Rurik Rostislavich of Belgorod by his wife Anna Yurevna of Turov.
 * Agafia of Rus (after 1188 - after 31 August 1247), wife of Konrad I of Masovia.