In Greek mythology, Astydamia (Ancient Greek Ἀστυδάμεια), also called Hippolyta or Cretheis, is queen of Iolcus as wife of Acastus. After Peleus refuses her advances she falsely accuses him; Acastus abandons him on Pelion, and Peleus later sacks Iolcus and dismembers her.
Adapted from Wikipedia, "Astydamia (wife of Acastus)" · CC BY-SA 4.0
I.Peleus at Iolcus
Pindar's Nemean odes already tell how crafty Hippolyta tried to seduce Peleus and, refused, lied to Acastus; the king left Peleus unarmed for wild beasts until Chiron (or Hermes / Hephaestus) saved him. Apollodorus names the queen Astydamia: Peleus comes for purification after killing Eurytion; she writes a fraudulent letter that drives Antigone to hang herself, then charges Peleus with assault. Acastus hides Peleus' sword on a hunt and deserts him among centaurs.
Years later Peleus returns with Jason and the Dioscuri, sacks Iolcus, cuts Astydamia in pieces, and marches the army between her limbs — a vengeance sometimes read against purification rites that pass between halved victims.
II.Homonym care
The atlas id astydamia-acastus is Acastus' Iolcian queen alone. Distinct from astydamia-pelops (daughter of Pelops, wife of Alcaeus, mother of Amphitryon) and from other Astydameia namesakes tied to Heracles.