(Ἐχέφρων).
1. A son of Heracles and Psophis, the daughter of Xanthus or Eryx. He was twin-brother of Promachus, and both had a heroum at Psophis. (Paus. 8.24. §§ 1, 3.)
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