Pindar writes in the fourth ode that Hippolyta's ‘crafty arts’ against Peleus, and Acastus’ attempt to kill him via animal ambush (which was only thwarted thanks to an intervention by the wise centaur Chiron) led to him waging a war against the city of Iolcus.
[6] Hippolyta had tried to seduce, begged and coaxed Peleus into becoming her illicit lover, but he had refused her advances again and again, evoking Zeus the god of hospitality in anger.
[7][8] The story is further explained by a scholiast on those lines; the wife of Acastus, here called Cretheis, fell in love with Peleus, and tried to persuade him to sleep with her, but he would have none of that.
Astydamia married Acastus the heir of Pelias, until one day Peleus arrived at the court, seeking purification for his accidental murder of Eurytion during the hunt for the Calydonian Boar in Aetolia.
[14][15] Acastus gladly helped the remorseful man, but Astydamia grew deeply infatuated with Peleus, and tried to arrange meetings with him, even though both he and she were already married at the time.
[13][19] Astydamia finally met her end many years later, when Peleus returned to conquer and sack Iolcus with the help of Jason and the Dioscuri.