He was the son of Izyaslav II Mstislavich, prince of Kyiv and his first
wife, whose name is not known. Mstislav married about 1149 to Yudifa or Agnes,
daughter of Bolyeslav III Kraivoysti, King of Poland. Their sons were
Vladimir, prince of Brest;
Vsyevolod, prince of Belz; Roman, prince of Novgorod then of Vladimir-in-Volynia;
and Svyatoslav, prince of Brest. Mstislav was
appanage prince of Kursk in 1146 and appanage prince of Peryeaslavl (1146-1149)
and appanage prince of Dorogobuzh in 1150. Then he ruled Peryeaslavl again from
1151 to 1154, and Lutsk in 1155. He shifted to be appanage prince of
Vladimir-in-Volynia in 1157 and finally became prince of Kyiv in 1167-69 before
returning once more to Vladimir-in-Volynia. The family is shown on this
As the eldest son of Vladimir Monomakh's grandson,
Izyaslav II Mstislavich, his early assignments reflect his being a major
assistant to his father in the multi-sided clan wars. Once he gained control of
Vladimir-in-Volynia he was in a good position to influence affairs in Kyiv.
When Izyaslav Mstislavich died, Mstislav Izyaslavich then supported his uncle,
Rostislav Mstislavich until the latter's death in
1147 AD - Mstislav first appears as the assistant aiding his father in taking
Kyiv after Vsyevolod's death. At this time he moved from Kursk to the more
important capital, Peryeaslavl to control that principality against Yuri
1149 AD - Yuri Dolgoruki marched south and ousted
Mstislav from Peryeaslavl and placed his own son, Gleb Yur'yevich, on that
throne, forcing Mstislav to flee to Vladimir-in-Volynia.
1150 AD - Mstislav defeated Gleb Yur'yevich and
regained Peryeaslavl. During this time he also went to Dorogobuzh to fight
Vladimirko Vladimirovich Rostislavich.
1151 AD - Mstislav helped push Yuri Dolgoruki out of Kyiv during that year's
episode in the ongoing struggle.
1151 AD - Mstislav also assisted his father to bring Magyar forces into
Volynia. It was in this year that Izyaslav arranged for Mstislav to marry
Yudifya in order to create dynastic ties to her father, Boleslav III. Izyaslav
arranged for Mstislav's sister, Yeofrosina, to marry Miezko III of Poland at
1152 AD - Mstislav obtained more Magyar troops to fight against Vladimirko and
tried to keep King Geza II from being lenient with Vladimirko.
1152-3 AD - Mstislav led the Pereyaslavl army against Yuri Dolgoruki's allies,
the Polovtsi and defeated them. When Vladimirko Vladimirovich died in 1152-3,
Mstislav then attacked Vladimirko's son, Yaroslav
Vladimirovich Osmomysl, the new prince of Galich in a drawn battle on the Seret
1154 AD - Mstislav went to Georgia to bring a new wife, Princess Rusandar the
sister of King George III, for his father, Izyaslav.
1154 AD - Mstislav's great uncle, Vyacheslav, tried to put
Rostislav Mstislavich of Smolensk on the Kyivan
throne. Yuri Dolgoruki with his Polovtsi allies again took the city. Mstislav
had to abandon Pereyaslavl again to Gleb Yur'yevich and retreat again to
1156 AD - Mstislav put his brother, Yaroslav Izyaslavich, at Lutsk and drove
Vladimir from Vladimir-in-Volynia. He obtained Polish assistance to defend
against Yuri Dolgoruki, Vladimir and Yaroslav.
1157 AD - Mstislav joined with Rostislav Mstislavich of Smolensk and Izyaslav
Daniilyevich of Chernigiv to push Yuri Dolgoruki out of Kyiv again. Mstislav
supported Izyaslav Davidovich for Kyiv but then forced him out.
1159 AD - He installed Rostislav Mstislavich at Kyiv and took some of the
border towns for himself.
1159-67 (or 1161-67)AD - Rostislav Mstislavich ruled Kyiv jointly with
1167 AD - Mstislav joined the allied Rus army campaign to try to open a route
to the Black Sea (that is fight the Polovtsi).
1167 AD - When Rostislav Mstislavich died,
Mstislav led his brothers and Rostislav's sons (from Smolensk) and the sons of
Yaroslav of Galich against Vladimir.
1167 AD - Mstislav became prince of Kyiv and sent his son, Roman Mstislavich to rule Novgorod. He prepared another
campaign to the Black Sea.
1169 AD - Meanwhile Yuri Dolgoruki's sons, Andrei
Yur'yevich Bogolubski, and Gleb Yur'yevich at Pereyaslavl, together with the
Smolensk and Chernigiv princes drove Mstislav back out of Kyiv and installed
Gleb Yur'yevich who married a daughter of the
Svyatoslavichi(Chernigiv) prince, Izyaslav III
Davidovich. Then Andrei Bogolubski forced Roman out of Novgorod as well.
Mstislav returned again to Vladimir-in-Volynia.
1170 AD - Mstislav died leaving his brother, Yaroslav, at Lutsk, and sons - Roman at
Vladimir-in-Volynia, Svyatoslav at Brest,
Vsyevolod at Belz. Roman was able to unite
Vladimir and Galich temporarily before dying in yet another battle, this time
in Poland, in 1205. He left two sons under age 5 with his widow. But they
regained everything and more. Daniil became King of Galicia.