[5][6][7] Amestris was the daughter of Otanes, one of the seven noblemen reputed to have killed the magus who was impersonating King Bardiya in 522 BC.
The origin of this story is unclear, since known records and accounts indicate that human sacrifices were not permitted within the Persian religion.
On seeing this, Masistes fled to Bactria to start a revolt, but was intercepted by Xerxes' army who killed him and his sons.
[8] Amestris outlived Xerxes, remaining active in royal affairs during the long reign of their son Artaxerxes I.
[11] In the manga Fullmetal Alchemist the fictional country the story takes place in is named Amestris.