2.9
When Pelops had reached the Ocean and been cleansed by Hephaestus,Compare Tzetzes, Scholiast on Lycophron 156; Scholiast on Eur. Or. 990. he returned to Pisa in Elis and succeeded to the kingdom of Oenomaus, but not till he had subjugated what was formerly called Apia and Pelasgiotis, which he called Peloponnesus after himself.As to Apia, the old name of Peloponnese, see above, Apollod. 2.1.1; Paus. 2.5.7; Stephanus Byzantius, s.v. Ἀπία . The term Pelasgiotis seems not to occur elsewhere as a name for Peloponnese. However, Euripides uses Pelasgia apparently as equivalent to Argolis (Eur. Or. 960).
2.10
The sons of Pelops were Pittheus, Atreus, Thyestes, and others.According to Pindar, Pelops had six sons by Hippodamia, and three different lists of their names are given by the Scholiasts on the passage. All the lists include the three mentioned by Apollodorus. See Pind. O. 1.89(144), with the Scholia. Three sons, Hippalcimus, Atreus, and Thyestes, are named by Hyginus (Fab. 84). Besides his legitimate sons Pelops is said to have had a bastard son Chrysippus, who was born to him before his marriage with Hippodamia. His fondness for this love-child excited the jealousy of his wife, and at her instigation Atreus and Thyestes murdered Chrysippus by throwing him down a well. For this crime Pelops cursed his two sons and banished them, and Hippodamia fled to Argolis, but her bones were afterwards brought back to Olympia. See Thuc. 1.9; Paus. 6.20.7; Tzetzes, Chiliades i.415ff.; Scholiast on Hom. Il. ii.105; Hyginus, Fab. 85. Euripides wrote a tragedy Chrysippus on this subject. See TGF (Nauck 2nd ed.), pp. 632ff. The tragedy is alluded to by Cicero (Tusc. Disp. iv.33.71). As to Chrysippus, see also above, Apollod. 3.5.5. Now the wife of Atreus was Aerope, daughter of Catreus, and she loved Thyestes. And Atreus once vowed to sacrifice to Artemis the finest of his flocks; but when a golden lamb appeared, they say that he neglected to perform his vow,