(Ἀφνειός), the giver of food or plenty, a surname of Ares, under which he had a temple on mount Cnesius, near Tegea in Arcadia. Aereope, the daughter of Cepheus, became by Ares the mother of a son (Aerropus), but she died at the moment she gave birth to the child, and Ares, wishing to save it, caused the child to derive food from the breast of its dead mother. This wonder gave rise to the surname Ἀφνειός. (Paus. 8.44.6.)
[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