In Greek mythology, Myrmidon was the eponymous ancestor of the Myrmidons[1].
He was the son of Zeus and Eurymedusa[2][3], daughter of Cleitor (Cletor) of Arcadia[4][5] or of the river god Achelous[6][7]. Zeus was said to have approached Eurymedusa in the form of an ant (Greek μύρμηξ myrmēx), which was where her son's name came from; others say that Myrmex was the name of Eurymedusa's mortal husband, and that it was his shape that Zeus assumed to approach her[8].
Myrmidon married Peisidice, daughter of Aeolus and Enarete, and by her became the father of Antiphus and Actor[9]. Also given as his sons are Erysichthon and Dioplethes, himself father of Perieres[10], although Erysichthon and Perieres have been ascribed different parentage as well. He also had two daughters: Eupolemeia (mother of the Argonaut Aethalides by Hermes)[11][12] and Hiscilla (mother of Phorbas by Triopas)[13].