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|Dmitry of the Don|
|Reign||13 November 1359 – 19 May 1389|
|Mother||Alexandra Vasilyevna Velyaminova|
12 October 1350|
Moscow, Grand Duchy of Moscow
|Died||19 May 1389
Moscow, Grand Duchy of Moscow
Saint Dmitry Ivanovich Donskoy (Russian: Дми́трий Ива́нович Донско́й,also known as Dimitrii), or Dmitry of the Don, sometimes referred to simply as Dmitry (12 October 1350 in Moscow – 19 May 1389 in Moscow), son of Ivan II the Meek of Moscow (1326–1359), reigned as the Prince of Moscow from 1359 and Grand Prince of Vladimir from 1363 to his death. He was the first prince of Moscow to openly challenge Mongol authority in Russia. His nickname, Donskoy (i.e., "of the Don"), alludes to his great victory against the Tatars in the Battle of Kulikovo (1380) which took place on the Don River. He is venerated as a Saint in the Orthodox Church with his feast day on 19 May.
Early reign 
Dmitry ascended the throne of the Principality of Moscow at the age of 9. During his minority, Russia's Metropolitan Aleksey ran the government. In 1360, the title most prized among Russian princes, that of Grand Prince of Vladimir, was transferred by a Khan of the Golden Horde to Dmitry Konstantinovich of Nizhniy Novgorod. In 1363, after that prince was deposed, Dmitry Ivanovich was crowned at Vladimir. Three years later, he made peace with Dmitriy Konstantinovich and married his daughter Eudoxia. In 1376, their joint armies ravaged Volga Bulgaria.
The most important event during Dmitry's early reign was laying the Moscow Kremlin's cornerstone: it was completed in 1367. Thanks to the new fortress, the city withstood two sieges by Algirdas of Lithuania, in 1368 and 1370. A third siege in 1372 ended in the Treaty of Lyubutsk. In 1375, Dmitry settled, in his own favor, a conflict with Mikhail II of Tver over Vladimir. Other princes of Northern Russia acknowledged his authority and contributed troops to the impending struggle against the Horde. By the end of his reign, Dmitry had more than doubled the Principality of Moscow's territory.
Struggle against Mamai 
Dmitry's thirty-year reign saw the beginning of the end for Mongol domination of parts of what is now Russia. The Golden Horde was severely weakened by civil war and dynastic rivalries. Dmitry took advantage of this lapse in Mongol authority to openly challenge the Tatars.
While he kept the Khan's patent to collect taxes for all of Russia, Dmitry is also famous for leading the first Russian military victory over the Mongols. Mamai, a Mongol general and claimant to the throne, tried to punish Dmitry for attempting to increase his power. In 1378 Mamai sent a Mongol army, but it was defeated by Dmitry's forces in the Battle of Vozha River. Two years later Mamai personally led a large force against Moscow. Dmitry met and defeated it at the Battle of Kulikovo.
The defeated Mamai was presently dethroned by a rival Mongol general, Tokhtamysh. That khan reasserted Mongol rule over parts of what now is Russia and overran Moscow for Dmitry's resistance to Mamai. Dimitry, however, pledged his loyalty to Tokhtamysh and to the Golden Horde and was reinstated as Mongol principal tax collector and Grand Duke of Vladimir. Upon his death in 1389, Dimitry was the first Grand Duke to bequeath his titles to his son Vasiliy without consulting the Khan.
Marriage and children 
- Daniil Dmitriyevich (c. 1370 – 15 September 1379).
- Vasiliy I of Moscow (30 September 1371 – 27 February 1425).
- Sofia Dmitriyevna. Married Fyodor Olegovich, Prince of Ryazan (reigned 1402–1427).
- Yuriy Dmitriyevich, Duke of Zvenigorod and Galich (26 November 1374 – 5 June 1434). Claimed the throne of Moscow against his nephew Vasiliy II of Moscow.
- Maria Dmitriyevna (d. 15 May 1399). Married Lengvenis.
- Anastasia Dmitriyevna. Married Ivan Vsevolodovich, Prince of Kholm.
- Simeon Dmitrievich (d. 11 September 1379).
- Ivan Dmitriyevich (d. 1393).
- Andrey Dmitriyevich, Prince of Mozhaysk (14 August 1382 – 9 July 1432).
- Pyotr Dmitriyevich, Prince of Dmitrov (29 July 1385 – 10 August 1428).
- Anna Dmitriyevna (born 8 January 1387). Married Yury Patrikiyevich. Her husband was a son of Patrikas, Prince of Starodub and his wife Helena. His paternal grandfather was Narimantas. The marriage solidified his role as a Boyar attached to Moscow.
- Konstantin Dmitriyevich, Prince of Pskov (14 May/15 May 1389–1433).
See also 
- Rulers of Russia family tree
- Dmitry Donskoy, opera by Anton Rubinstein (1852).
- Dmitri Donskoi (ship)
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