Yaroslav Svyatoslavich of Murom
Yaroslav Svyatoslavich (baptized Pankraty, c. 1071–1129) was the youngest son of Grand Prince Sviatoslav II of Kiev and founder of the Murom-Ryazan line. He first appears in 1096 fighting for his brother Oleg against Vladimir Monomakh; after defeat he withdrew to Murom and made peace. At the 1097 Lyubech congress the Murom-Ryazan land was assigned to him.
In 1123 he moved to rule Chernigov, but his nephew Vsevolod Olgovich drove him out in 1127, and Kiev refused to restore him. He died in Murom in 1129.