Demetrius or Demetrius Pheidon
2. Son of Pythonax, surnamed Pheidon, one of the select band of cavalry, called ἑταιροι,in the service of Alexander. (Arrian, Arr. Anab. 4.12; Plut. Alex. 54.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.