Rúrikovich
Oleg III Svyatoslavich (c. 1147–1204) was a Rus' prince (a member of the Rurik dynasty). His baptismal name was Feodosy. He was prince of Vshchizh (1166–before 1175), of Novgorod-Seversk (1200–1201), and of Chernigov (1201/1202–1204).