Son of Phylacus
Son of Phylacus  (or of Cephalus: Paus. 10,29,6) and Clymene , husband of Astyoche (or Diomede), father of Podarces and Protesilaus (Hom. Il. 2,704 f.; 13,698; Hom. Od. 11,289-297; 15,225-239). His father promised Melampus  a large herd of cattle if he freed I. from his infertility, for which the sacrilege of the father was to blame (Paus. 4,36,3; Apollod. 1,98-102). The speed of I. was proverbial (Hom. Il. 23,636; Paus. 5,17,10).