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.
Dmitry Donskoy, illustration in Tsarsky Titulyarnik, 17th century
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.
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.
Defense of Moscow from Tokhtamysh in 1382
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.
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).