Kashin

Kashin was an appanage of the princes of Tver, centred on the town on the Kashinka, a Volga tributary. In 1319 Vasily Mikhailovich received it after the division of his father Mikhail's lands.

Vasily disputed the Tver throne with his nephews and held it after receiving the khan's patent in 1348. Driven back to Kashin in 1365, he fought Tver with Moscow's support. Kashin was independent from 1375 until its prince died without an heir in 1382; a second princely line ruled from 1399 to 1426, and Kashin passed to Moscow with Tver in 1486.