A Greek King, Phegeus offered succor and his daughter, Alphesiboea, to Alcmaeon, who was fleeing from the Erinyes. Alcmaeon left his mother's, Eriphyle's, jewelry and clothing with him and then returned for it later in order to please the river god Achelous and have his daughter, Callirhoe, in marriage. Phegeus had his sons kill Alcmaeon. In Greek mythology, Alphesiboea was the daughter of Phegeus and wife of Alcmaeon. ... In Greek mythology, Alcmaeon, or Alkmáon, was the son of Amphiaraus and Eriphyle. ... In Greek mythology the Erinyes or Eumenides (the Romans called them the Furies) were female personifications of vengeance. ... In Greek mythology, Eriphyle, daughter of Talaus, was the mother of Alcmaeon and the wife of Amphiaraus. ... In Greek mythology, Achelous (Greek: ÎÏελÏοÏ), was the patron deity of the river by the same name, which is the largest river of Greece, and thus the chief of all river deities, every river having its own river spirit. ... In Greek mythology, three women were named Callirhoe or Callirrhoe: A daughter of Oceanus and mother of Echidna, one of the Oceanids. ...
At her earnest request her husband induced Phegeus, king of Psophis in Arcadia, and the father of his first wife Arsinoe (or Alphesiboea), to hand over to him the necklace and peplus (robe) of Harmonia, that he might dedicate them at Delphi to complete the cure of his madness.
When Phegeus discovered that they were really meant for Callirrhoe, he gave orders for Alcmaeon to be waylaid and killed (Apollodorus iii.
This was granted, and her sons Amphoterus and Acarnan slew Phegeus with his two sons, and returning with the necklace and peplus dedicated them at Delphi (Ovid, Metam.
Phegeus 1 is the Psophian who purified Alcmaeon 1 (one of the EPIGONI) and gave him his daughter Arsinoe 1 as wife.
Alcmaeon 1 went to Psophis and told Phegeus 1 that it had been predicted that he should be rid of his madness when he had brought the Robe and Necklace to Delphi and dedicated them.
Phegeus 1 believed him and gave them to him, but a servant disclosed that Alcmaeon 1 was taking the Robe and Necklace to Callirrhoe 2.