Boris of Tver
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Boris Aleksandrovich of Tver or Boris the Great was a Grand Prince of Tver from 22 April 1426 until his death.
Rohatyn of Boris Tverskoy
Congress of Lutsk
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The Congress of Lutsk was a diplomatic gathering held in Lubart's Castle in Lutsk, Grand Duchy of Lithuania over a 13-week period beginning on January 6, 1429. The main topic of discussion was the cor
