Russian Tsar, born in 1186 and died in 1219. He was the son of Usevolod III, Grand Prince of Uladimir, and was named by his father Prince of Novogorod at the age of twenty. But having excited discontent among his subjects, his father summoned him to his side, and proclaimed the independence of Novogorod. Later named him his heir, provided that give some cities to his brother Jorge, and how will resist it desheredó it, and instituted heir to the other. Constantine appealed to arms, won his Principality, and later called his brother and declared him his heir; It was sweet, and not distinguished by any glorious fact.