Konstantin Yuryevich of Obolensk

Konstantin Yuryevich was the appanage prince of Obolensk, a holding of the Tarusa principality, and the ancestor of the Obolensky princes, said to descend from the semi-legendary Yury of Tarusa, son of Mikhail of Chernigov.

In November 1368, during Algirdas of Lithuania's first campaign against Moscow, the Lithuanians stormed Obolensk and killed Prince Konstantin. His sons Semyon, Ivan and Andrei then entered the service of Dmitry Donskoy.