Aitoliko was located with relation to the ancient towns of Pleuron and Oiniadai. Thus we find in Sophocles Oeneus, and not Thestius, represented as king of Pleuron. The territory of Pleuron was called Pleuronia. The ruins of New Pleuron are located at . In many species the coxa has two lobes where it articulates with the pleuron. The ruins of Old Pleuron are located at near modern Gyphtokastro/Petrovouni at . Pleuron is rarely mentioned in the historical period. North-west of Missolonghi are the remains of Pleuron ('Asfakovouni'), a town mentioned in Homer's works.