Wikipedia
Masistes
Masistes ( Greek Μασίστης, Masistês; Old Iranian *Masišta) (?- c. 478 BC) was a Persian prince of the Achaemenid Dynasty, son of king Darius I (reign: 520-486 BC) and of his wife Atossa, and full brother of king Xerxes I (reign: 486-465 BC). He was satrap (governor) of Bactria during his brother's reign, where he attempted to start a revolt in 478 BC.