Pisidice or Peisidice (Ancient Greek: Πεισιδίκη) is a princess of Iolcus, daughter of Pelias and one of the Peliades. Apollodorus names her among Pelias' daughters beside Pelopia, Hippothoe, Alcestis, and their brother Acastus; with her sisters she is implicated in Medea's cauldron fraud that leads to the death of their father.
Adapted from Wikipedia, "Pisidice" · CC BY-SA 4.0
I.Peliad at Iolcus
Apollodorus counts Pisidice among the daughters whom Pelias begot at Iolcus — sister to Pelopia, Hippothoe, Alcestis, and Acastus in the Thessalian royal stemma that precedes the Argonaut voyage.
When Jason returned from Colchis, Medea showed Pelias's daughters her art: an old ram cut up and boiled leapt forth a lamb. Trusting the promise of renewed youth, the daughters minced and boiled their father. The Peliades of Bibliotheca 1.9.10 are the household implicated, though many tellings do not name each sister in the act.
II.Homonyms
This atlas entry (pisidice-pelias) is the Peliad. Wikipedia's Pisidice page also lists Peisidice daughter of Aeolus and Enarete; Pisidice daughter of Nestor at Pylos (pisidice-nestor in this atlas); Pisidice of Methymna who betrayed her city to Achilles; and other local queens — distinct figures sharing the name.