Mstislav II "the Brave" Grand Duke of KIEV, TWIN
He married Agnieszka Princess of Poland 1151/52 at of Kraków, Kraków, Poland . Agnieszka Princess of Poland was born at of Kraków, Kraków, Poland 1137 daughter of Boleslaw III "Crooked Mouth" Prince of Poland and Salome Countess of Berg-Schelklingen .
They were the parents of 3
children:
Roman Mstislavich Grand Duke of Galicia, Vladimir-Volynsk
born Abt 1153.
Vsevolod I Duke of Vladimir-Volynsk, And Belz
born Abt 1155.
Vladimir Mstislavich Duke of Brest
born Abt 1157.
Mstislav II "the Brave" Grand Duke of Kiev, Twin died 13 Aug 1172 .
Agnieszka Princess of Poland died 1181 .