Ashtat Yeztayar was an Iranian military officer under what last great king of the Sasanian Empire, reigning from 590 to 628?
Khosrow II Khosrow II (Chosroes II in classical sources; Middle Persian: "Husrō(y)"), entitled "Aparvēz" ("The Victorious"), also Khusraw Parvēz (New Persian: خسرو پرویز ), was the last great king of the Sasanian Empire, reigning from 590 to 628.
Khosrov IV of Armenia Khosrov IV (Armenian: Խոսրով ), was a Prince who served as a Sassanid King of Arsacid Armenia, which flourished during the second half of the 4th century & first half of the 5th century, from 387 until 389.