Grand Duke Svyatoslav Vsevolodovich of Kiev III & Princess Mariya Vasilkovna of Polotsk 
Svyatoslav and Mariya were married in 1143 in Polotsk, Byelorussia.1 They had six sons and two daughters, named Boris, Oleg, Vladimir, Chermnij, Gleb, Mstislav, Boleslava and Mariya.
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Personal Details
Grand Duke Svyatoslav Vsevolodovich of Kiev III
Svyatoslav was born in 1130 in Chernigov, Ukraine.1 He died at the age of 64 on July 24th, 1194.1
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Children
Death Notes
D: 1214/1215
Duke Vladimir Boris Svyatoslavich of Novgorod Seversk
Vladimir was born in 1149 in Chernigov, Ukraine.2
Grand Duke Vsevolod (Chermnij) of Kiev III
Vsevolod, known as Chermnij, was born in 1153 in Kiev, Ukraine.1 He died at the age of 61 in 1214.1
Duke Gleb Pakhomij Svyatoslavich of Belgorod and Chernigov
Gleb was born in 1155 in Chernigov, Ukraine.2
Duke Mstislav Pantelejmon Svyatoslavich of Chernigov
Mstislav was born in 1157 in Chernigov, Ukraine.2
1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I33627&style=TABLE
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I33665
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I33665