Vasily I of Moscow
|Reign||19 May 1389 – 27 February 1425|
|Consort||Sophia of Lithuania|
|Anna, Byzantine Empress consort
30 December 1371|
Moscow, Grand Duchy of Moscow
|Died||27 February 1425
Moscow, Grand Duchy of Moscow
Vasily I Dmitriyevich (Russian: Василий I Дмитриевич; 30 December 1371 – 27 February 1425) was the Grand Prince of Moscow (r. 1389—1425), heir of Dmitry Donskoy (r. 1359—1389). He ruled as a Great Horde vassal between 1389-1395, and again in 1412-1425. Mongol emir Timur's raid on the Volgan regions in 1395 resulted in the Golden Horde's state of anarchy for the next years and the independence of Moscow. In 1412, Vasily reinstated himself as the Horde's vassal. He had entered an alliance with the Grand Duchy of Lithuania in 1392 and married Vytautas the Great's only daughter Sophia, though the alliance turned out to be fragile, since Vytautas would later capture Vyazma and Smolensk in 1403–1404.
Family and early life 
Vasily I continued the process of unification of the Russian lands: in 1392, he annexed the principalities of Nizhny Novgorod and Murom. Nizhny Novgorod was given to Vasily by the Khan of the Golden Horde in exchange for the help Moscow had given against one of his rivals. In 1397–1398 Kaluga, Vologda, Veliki Ustyug and Komi peoples' lands were annexed.
To prevent Russia from being attacked by the Golden Horde, Vasily I entered into alliance with the Grand Duchy of Lithuania in 1392 and married Sophia of Lithuania, the only daughter of Vytautas the Great. The alliance turned out to be fragile, since Vytautas would later capture Vyazma and Smolensk in 1403–1404.
Mongol emir Timur raided the Slavic lands in 1395; he ruined the Volgan regions but did not penetrate so far as Moscow. Timur's raid was of service to the Russian prince as it damaged the Golden Horde, which for the next twelve years was in a state of anarchy. During the whole of this time no tribute was paid to the khan, Olug Moxammat, though vast sums of money were collected in the Moscow treasury for military purposes.
In 1408 Edigu burnt Nizhny Novgorod, Gorodets, Rostov, and many other towns but failed to take Moscow, though he had still burnt it. In 1412, however, Basil found it necessary to pay the long-deferred visit of submission to the Horde.
Domestic policy 
During his reign, feudal landownership kept growing. With the growth of princely authority in Moscow, feudals' judicial powers were partially diminished and transferred to Vasily's deputies and heads of volosts.
Russian (East Slavic) chronicles speak of a monk, Lazar the Serb, newly arrived from Serbia, inventing and building a clock on a tower in the Grand Prince's palace in Moscow behind the Annunciation Church at the request of Vasily I, in 1404. It was the first ever mechanical clock in Russia, and also the country's first public clock. It was among the first ten such advanced clocks in Europe, and was regarded a technical miracle at the time.
Marriage and children 
- Anna of Moscow (1393 – August 1417), wife of John VIII Palaiologos
- Yury Vasilievich (30 March 1395 – 30 November 1400)
- Ivan Vasilievich (15 January 1396 – 20 July 1417), husband of a daughter of Ivan Vladimirovich of Pronsk.
- Anastasia Vasilievna (d. 1470), wife of Vladimir Alexander, Prince of Kiev, son of Vladimir Olgerdovich
- Daniil Vasilievich (6 December 1400 – May 1402).
- Vasilisa Vasilievna. Married first Alexander Ivanovich "Brukhaty", Prince of Suzdal and secondly his first cousin Alexander Daniilovich "Vzmetenj", Prince of Suzdal. They were both fifth-generation descendants of Andrei II of Vladimir.
- Simeon Vasilievich (13 January – 7 April 1405)
- Maria Vasilievna. Married Yuri Patrikievich, son of Patrikej, Prince of Starodub and his wife Helena. The marriage solidified his role as a Boyar attached to Moscow.
- Vasily II of Moscow (10 March 1415 – 27 March 1462)
See also 
||This article needs additional citations for verification. (May 2009)|
- Chisholm, Hugh, ed. (1911). "Basil (I.-IV. of Muscovy)". Encyclopædia Britannica (11th ed.). Cambridge University Press.
|Grand Prince of Moscow
|Heir to the Russian Throne