Boris Aleksandrovich of Tver or Boris the Great[citation needed] (ca. 1399–10 February 1461) was a Grand Prince of Tver from 22 April 1426 until his death.
Boris Aleksandrovich of Tver or Boris the Great[citation needed] (ca. 1399–10 February 1461) was a Grand Prince of Tver from 22 April 1426 until his death.