In Greek mythology, Pelopia or Pelopeia (Ancient Greek: Πελόπεια) was a daughter of King Pelias of Iolcus — one of the Peliades — and sister of Acastus, Alcestis, Pisidice, and Hippothoe. With her sisters she was deceived by Medea into cutting Pelias to pieces and boiling him in a false rejuvenation rite. She is distinct from Pelopia daughter of Thyestes, mother of Aegisthus.
Adapted from Wikipedia, "Pelias" · CC BY-SA 4.0
I.Family
Pelias's wife is recorded as Anaxibia, daughter of Bias, or Phylomache, daughter of Amphion. His children include Acastus and daughters Pisidice, Alcestis, Pelopia, Hippothoe, and, in fuller lists, Amphinome, Evadne, Asteropeia, Antinoe, and Medusa. The daughters are collectively called the Peliades. Apollodorus's shorter catalogue names four sisters: Alcestis, Hippothoe, Pelopia, and Peisidice.
II.Medea's cauldron
When Jason and Medea returned from Colchis and Pelias still refused the throne, Medea tricked the Peliades. She cut up an old ram, boiled it, and produced a live young ram. Excited, the daughters cut their father into pieces and threw him into the pot, expecting the same miracle; he did not survive. Acastus then banished Jason and Medea and reclaimed Iolcus.
Euripides's earliest known tragedy, Peliades (455 BC), dramatized the murder of Pelias by his daughters under Medea's instruction. Pelopia as an individual has little separate myth beyond her place in that sisterhood.
III.Homonyms
Another Pelopia — treated in this atlas as pelopia — is daughter of Thyestes and mother of Aegisthus. This article concerns only Pelias's daughter at Iolcus.