Background
Boris, the son of Alexander II of Tver, was Grand Prince of Tver from April 22, 1426 to his death.
Boris, the son of Alexander II of Tver, was Grand Prince of Tver from April 22, 1426 to his death.
During his reign, the story of Third Rome ("the second Constantine") started in Tver, when the monk Foma (Thomas) of Tver had written The Eulogy of the Pious Grand Prince Boris Alexandrovich in 1453.
