Background
Son of Izyaslav Mstislavich, Velikiy Kniaz" (Grand Prince) of Kiev. Along with his father, he participated in the wars against Yury Dolgoruky and the Chernigov princes.
Son of Izyaslav Mstislavich, Velikiy Kniaz" (Grand Prince) of Kiev. Along with his father, he participated in the wars against Yury Dolgoruky and the Chernigov princes.
After an initial victory against the Cumans in 1153, Mstislav was defeated by the Cumans at the Psyol river. Yury Dolgoruky forced him to flee to Poland in 1155, but the next year Mstislav returned with a new army and defeated Dolgoruky at Volodymyr-Volynsky. Dolgoruky died in 1157, and Mstislav had himself crowned at Volodymyr-Volynsky.
In 1169, Kiev was sacked by Grand Prince Andrey Bogolyubsky who removed Mstislav as grand prince.
Mstislav passed his exile in Byzantium and during Emperor Manuel I"s reign, was rewarded the district of Otskalana. In 1151 Mstislav married Agnes, the daughter of Duke Boleslaus III of Poland.
They had three sons:
Roman Mstislavich (c 1152–1205)
Sviatoslav Mstislavich, Prince of Brest
Vsevolod Mstislavich of Volhynia, Prince of Belz, Prince of Volodymyr-Volynsky (died 1196)
His death is reported in 1172 in the book Heraldry of the Royal Families of Europe, Jiri Louda and Michael Maclagan. Clarkson North Potter, New York 1981 in Table 135.