Sviatoslav III Vsevolodovich of Vladimir was the Prince of Novgorod and Grand Prince of Vladimir-Suzdal.
Sviatoslav III Vsevolodovich was the sixth son of Vsevolod the Big Nest and Maria Shvarnovna. Wikipedia
Born: March 27, 1196, Vladimir, Russia
Died: February 3, 1252 (age 55 years), Yuryev-Polsky, Russia
Great-grandparent: Vladimir II Monomakh
Children: Dimitri Rurik, Duke of Yurievsk
Partner: Princess Eudokia of Murom
Parents: Vsevolod the Big Nest and Maria Shvarnovna
Siblings: Yaroslav II of Vladimir