When his uncle Abihail and Abihail's wife died, this man adopted their daughter. The daughter's Jewish name was Hadassah, but she went by a different name because he at first forbade her from revealing her nationality. This man became important to the king when he revealed Bigtana and Teresh's assassination plot. He was able to use this prestige and the position of his cousin to foil a plot to kill Persian Jews that was suggested to King Xerxes by Haman. In the Biblical 
When his uncle Abihail and Abihail's wife died, this man adopted their daughter. The daughter's Jewish name was Hadassah, but she went by a different name because he at first forbade her from revealing her nationality. This man became important to the king when he revealed Bigtana and Teresh's assassination plot. He was able to use this prestige and the position of his cousin to foil a plot to kill Persian Jews that was suggested to King Xerxes by Haman. In the Biblical telling, Xerxes is known as Akhasveiros, and Hadassah is known as Esther. Name this Jewish hero of the Purim story.
When his uncle Abihail and Abihail's wife died, this man adopted their daughter.
Mordecai (or Mardakhai)