Ahasuerus

Facts:

Ahasuerus was a king who ruled over the ancient kingdom of Persia for twenty years.

This was during the time the exiled Jews were living in Babylonia, which had come under Persian rule.
Another name for this king may have been Xerxes.
After sending away his queen in a fit of anger, King Ahasuerus later chose a Jewish woman named Esther to be his new wife and queen.