'Rishathaim' in the Bible

So the wrath of the Lord was burning against Israel, and he gave them up into the hands of Cushan-rishathaim, king of Mesopotamia; and the children of Israel were his servants for eight years.

And the spirit of the Lord came on him and he became judge of Israel, and went out to war, and the Lord gave up Cushan-rishathaim, king of Mesopotamia, into his hands and he overcame him.