Konstantin Mikhailovich of Tver

Konstantin Mikhailovich (1306–1346) ruled Tver in the years when it lost its long contest with Moscow. The third son of Mikhail of Tver, he was held captive in Sarai after the Mongols executed his father in 1318, until he was ransomed for 2000 rubles; in 1320 he married Sophia, daughter of Yury of Moscow.

When the 1327 uprising drove his brother Aleksandr out, he returned to a devastated Tver and began gathering its people. In 1328 he obtained the khan's yarlyk and ruled quietly under the close watch of his wife's uncle, Ivan I of Moscow.

After Aleksandr was executed in 1339, Konstantin ruled again. A quarrel with Aleksandr's son Vsevolod took him to the Horde for judgment, but he died in 1346 before the trial began, and Vsevolod took the throne.