Peleus (pēˈlēəs, –ləs) [key], in Greek mythology, son of Aeacus and the father of Achilles by Thetis. He and his brother Telamon killed their half-brother Phocus and were exiled from Aegina. After taking part in the Calydonian hunt, Peleus went to Iolcus, where he killed King Acastus and Acastus' wife because they had once tried to murder him.
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