Konstantin Vasilievich of Rostov

Konstantin Vasilievich (1312–1365), second son of Prince Vasily Konstantinovich of Rostov, became in 1320 the first prince of the Borisoglebsk half of divided Rostov. In 1328 he married Maria, daughter of Ivan Kalita of Moscow, and thereafter served Moscow as a subordinate prince.

In 1360 he obtained a Tatar yarlyk for all of Rostov, dispossessing his nephew Andrei Fedorovich, but Moscow-backed resistance drove him to Ustyug four years later. He returned to Rostov and died of the plague in 1365.