(Ἵππων), of Rhegium, a philosopher, whom Aristotle (Aristot. Met. 1.3) considers as belonging to the Ionian school, but thinks unworthy to be reckoned among its members, on account of the poverty of his intellect. Fabricius (Bibl. Graec. vol. ii. p. 658) considers him the same as Hippon of Metapontum, who is called a Pythagorean, while some assign Samos as his birthplace. He was accused of Atheism, and so got the surname of the Melian, as agreeing in sentiment with Diagoras.
[G.E.L.C]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