Hoples
A son of Ion, a king of Athens between the reigns of Erechtheus and Cecrops
There Ion became the father of four sons, Geleon, Aegicores, Argades, and Hoples, according to whom he divided the Athenians into four classes, which derived their names from his sons.
From Smith's Dictionary of Greek and Roman Biography and MythologyThe power of Athens had been great before; but, now that the tyrants were gone, it became greater than ever. The chief authority was lodged with two persons, Clisthenes, of the family of the Alcmaeonids, who is said to have been the persuader of the Pythoness, and Isagoras, the son of Tisander, who belonged to a noble house, but whose pedigree I am not able to trace further. Howbeit his kinsmen offer sacrifice to the Carian Jupiter. These two men strove together for the mastery; and Clisthenes, finding himself the weaker, called to his aid the common people. Hereupon, instead of the four tribes among which the Athenians had been divided hitherto, Clisthenes made ten tribes, and parcelled out the Athenians among them. He likewise changed the names of the tribes; for whereas they had till now been called after Geleon, Aegicores, Argades, and Hoples, the four sons of Ion, Clisthenes set these names aside, and called his tribes after certain other heroes, all of whom were native, except Ajax. Ajax was associated because, although a foreigner, he was a neighbour and an ally of Athens.
From A Smaller History of Greece
The Athenian nobles were called EUPATRIDAE, the two other classes in the state being the GEOMORI or husbandmen, and DEMIURGI or artisans. This arrangement is ascribed to Theseus; but there was another division of the people of still greater antiquity. As the Dorians were divided into three tribes, so the Ionians were usually distributed into four tribes. The latter division also existed among the Athenians, who were Ionians, and it continued in full vigour down to the great revolution of Clisthenes (B.C. 509). These tribes were distinguished by the names of GELEONTES (or TELEONTES) "cultivators," HOPLETES "warriors," AEGICORES "goat-herds," and ARGADES "artisans." Each tribe contained three Phratriae, each Phratry thirty Gentes, and each Gens thirty heads of families.
From Lives of the Noble Grecians and Romans By Plutarch
The prices which Solon, in his sixteenth table, sets on choice victims, were naturally far greater; yet they, too, are very low in comparison of the present. The Athenians were, from the beginning, great enemies to wolves, their fields being better for pasture than corn. Some affirm their tribes did not take their names from the sons of Ion, but from the different sorts of occupation that they followed; the soldiers were called Hoplitae, the craftsmen Ergades, and, of the remaining two, the farmers Gedeontes, and the shepherds and graziers Aegicores.