A city in Aitolia.
During the Trojan War, Thoas, son of Andraimon, commanded the Achaian soldiers from Kalydon, Khalkis, Pleuron, Olenos, and Pylene.
The Achaian commander Diomedes traced his heritage back to a man named Portheus, who lived in Kalydon and Pleuron. The three sons of Portheus were—Oineus, Agrios, and Melas. Diomedes was the son of Tydeus, son of Oineus.
Two generations before the Trojan War, King Oineus of Kalydon angered the goddess Artemis by neglecting her sacrifices and not offering her the first fruits of the harvest. To punish Oineus, Artemis induced the Kouretes to attack Kalydon. She also sent a wild boar to terrorize the countryside and destroy Kalydon's orchards. The boar was large enough to uproot tall trees. Oineus's son Meleagros organized a hunting party to kill the boar. He also managed to repel the Kouretes, but only after incurring the hatred of his mother Althaia and the people of Kalydon with his arrogance.
| References: Homer, Iliad book 2, line 640; book 9, lines 530, 531, 577; book 13, line 217; book 14, line 116 |