There was also a Basil III, Patriarch of Bulgaria c.
1254–1263.
Vasili III Ivanovich (Russian: ??????? III ????????, also Basil; 26 March 1479 – 3 December 1533, Moscow) was the Grand Prince of Moscow from 1505 to 1533.
He was the son of Ivan III Vasiliyevich and Sophia Paleologue and was christened with the name Gavriil (???????).
He had three brothers: Yuri, born in 1480, Simeon, born in 1487 and Andrei, born in 1490, as well as five sisters: Elena (born and died in 1474), Feodosiya (born and died in 1475), another Elena (born 1476), another Feodosiya (born 1485) and Eudoxia (born 1492).
He is sometimes mockingly referred to as Vasili the Adequate due to his rule taking place between those of Ivan the Great and Ivan the Terrible, as well as the relative uneventfulness of his reign.