Vsevolod Mstislavich of Volhynia
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In this name that follows Eastern Slavic naming customs, the patronymic is Mstislavich.
Vsevolod Mstislavich was a son of Mstislav II of Kiev and Agnes, the daughter of King Boleslaus III of Poland. Vsevolod was Prince of Belz and Prince of Volodymyr. He died in 1196.