(ש"פ) איאקוס. בן זאוס, סב אכילס ושופט בשאול תחתיות.

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[Greek heroic] Aeacus is the son of Zeus and Aegina. He was the monarch of the island of Aegina, which was named after his mother. When his country was depopulated by the plague, he prayed to Zeus to grant him new subjects. Zeus then provided a new population by changing ants into people. They were called the Myrmidons ("ant-people"), who later took part in the Greek expedition against Troy, led by Achilles. Aeacus was the father of the heroes Telamon and Peleus and the grandfather of Achilles. Aeacus was the favorite of the gods and was so renowned for his piety that after his death he was made one of the judges of the realm of Hades, along with Minos and Rhadamanthys. 

Aeacus aiakos (Greek) In Greek mythology, the son of Zeus and Aegina (daughter of a river god), father of Telamon and Peleus, grandfather of Ajax, Achilles, and Neoptolemus. He ruled the Myrmidons, whom Zeus had created for him out of ants, and helped to erect the walls of Troy. Known for his piety and justice, he was worshiped as a demigod at Aegina and Athens, and after his death was made a judge in the underworld. {}