Yaroslav III Yaroslavich was the first Prince of Tver from 1247, and Grand Prince of Vladimir from 1263 until his death in 1271. All the later princes of Tver descended from him.
Yaroslav in the Cathedral of the Archangel in Moscow
The Prince of Tver was the title of the ruler of the Principality of Tver. The princes of Tver descended from the first prince, Yaroslav Yaroslavich. In 1485, Tver was formally annexed by Moscow and became an appanage.
Image: Dmitri revenge the death of his father
Image: Alexander Pskov
Image: Facial Chronicle b.08, p.036 Death of Konstantin Mikhailovich of Tver
Image: Alexander Pskov