(Ἔφεσος), a son of the river-god Caystrus, who was said, conjointly with Cresus, to have built the temple of Artemis at Ephesus, and to have called the town after himself. (Paus. 7.2.4.)
[L.S]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