Lewis & Short

2. Īon, ōnis, m., = Ἴων,

  1. I. an Athenian, son of Xuthus, who led a colony into Asia; from him is derived the name Ionia, Vitr. 4, 1; Stat. Th. 8, 454.
  2. II. A sculptor of the one hundred and thirteenth Olympiad, Plin. 34, 8, 19, § 51.