He is generally identified with Darius III (r. 336–330 BC), the last king of the Achaemenid Empire.
[1][2] Dara II was the half-brother of Iskandar (Alexander the Great), who, after refusing to pay tribute, rebelled.
During the rebellion, Dara II was assassinated by his ministers Mahyar and Janushyar (Bessus and Nabarzanes).
[1] The Sasanian monarchs of Iran (224–651) invented a descent that traced them back to Dara II through a son named Sasan (called "the elder").
[5] The Safavid ruler Ismail I (r. 1501–1524) claimed to be the personification of the divine light of investiture (farr) that had radiated in Dara II.