Vasilko Konstantinovich

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Vasilko Konstantinovich (Russian: Василько Константинович; 7 December 1209, in Rostov – 4 March 1238, in Sherensky forest) was the first Prince of Rostov. He was the son of Konstantin of Rostov, and the spouse of Maria of Chernigov. He died in the battle of the Sit River during the Mongol invasion of Kievan Rus' and was succeeded by his son Boris.