Overview
Eudoxia of Moscow, also known by her monastic name Euphrosyne (1353 – 1407), was the grand princess of Moscow during her marriage to Dmitry Donskoy.
Biography
Eudoxia was a daughter of Dmitry Konstantinovich, Grand Prince of Suzdal and Nizhny Novgorod and Vasilisa of Rostov.
Her maternal grandparents were Konstantin Vasilievich, Prince of Rostov and Maria of Moscow. Maria was a daughter of Ivan I of Moscow and his first wife Yelena.
On 18 January 1366, Eudoxia married Grand Prince Dmitry Donskoy. In 1382, she stayed in Moscow in the absence of her husband, while the army of khan Tokhtamysh was approaching the capital. After the birth of her son Andrey Dmitriyevich, she attempted to leave Moscow, but was detained by the Muscovites, who agreed to let her go only after long negotiations.
From Wikipedia (CC BY-SA 4.0).