Aeacus was the son of Zeus by Aegina, a daughter of the river-god Asopus, and thus, brother of Damocrateia. In some accounts, his mother was Europa and thus possible brother to Minos, Rhadamanthus and Sarpedon. He was the father of Peleus, Telamon and Phocus and was the grandfather of the Trojan war warriors Achilles and Telemonian Ajax. In some accounts, Aeacus had a daughter called Alcimache who bore Medon to Oileus of Locris. Aeacus' sons Peleus and Telamon were jealous of Phocus and killed him. When Aeacus learned about the murder, he exiled Peleus and Telamon.