Ivan III., surnamed The Threatening, sought to free Russia from the yoke of the Tartars who had held it tributary for two centuries; gained victories over the Tartars and the Poles, and was the first to receive at Moscow ambassadors from other Powers of Europe; reigned from 1462 to 1505.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Ivan * Ivan IV.