2. Satrap of Lydia and Ionia under Dareius Codomannus, was one of the Persian commanders at the battle of the Granicus, in B. C. 334, in which engagement, while he was aiming a blow from behind at Alexander, his arm was cut off by Cleitus, son of Dropides (Arr. Anab. 1.12, 15, 16). Diodorus calls him Spithrobates, and appears to confound him with Mithridates [MITHRIDATES, No. 5.], the son in-law of Dareius, whom Alexander slew in the battle with his own hand; while what Arrian records of Spithridates is related by Diodorus of his brother Rhoesaces. (Diod. 17.19, 20; Wess. ad loc. ; Plut. Alex. 16, de Alex. Fort. 1.2.)
[E.E]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890