Origin of the name Isaiah

From the Hebrew name יְשַׁעְיָהוּ (Yesha'yahu) meaning "Yahweh is salvation". Isaiah is one of the four major prophets of the Old Testament, supposedly the author of the Book of Isaiah. He was from Jerusalem and probably lived in the 8th century BC, at a time when Assyria threatened the Kingdom of Judah. As an English Christian name, Isaiah was first used after the Protestant Reformation.