Vasily I Dmitriyevich was Grand Prince of Vladimir and Moscow from 1389. He was the heir of Dmitry Donskoy, who reigned from 1359 to 1389.
Vasily I and Sophia of Lithuania on the Large Sakkos of Photius, 1410s
Vasily I visiting his father-in-law, Vytautas the Great.
Lazar the Serb showing Vasily the clock.
The Prince of Moscow, later known as the Grand Prince of Moscow, was the title of the ruler of the Principality of Moscow, initially a part of the grand principality of Vladimir-Suzdal. By the late 14th century, the grand principality was inherited by the prince of Moscow; the monarch bore the title of grand prince of Vladimir and Moscow and later the title of grand prince of Vladimir, Moscow and all Russia.
Image: Daniel Alexandrovich Moskovsky
Image: Jurij of Moscov
Image: Ivan Kalita
Image: Simeon Dumny