sentences:  A peace was signed c. 444 BC with Megabyzus after negotiations in which his father Artarius took part.Artaxerxes I died in 423 BC and was succeeded by his son Xerxes II, who, 55 days later, was murdered by his half-brother Sogdianus, Menostanes and the eunuch Pharnacyas.Sogdianus became king and named Menostanes as his prime minister and chief of the army.