Phorbas (Ancient Greek: Φόρβας, "giving pasture") was an early king of Argos in the native Argive succession. Son of Argus (or placed after Criasus in synthesising king-lists), he fathered Triopas, who succeeded him; through Triopas the line runs to Iasus and Io in Pausanias' Argive genealogy.
Adapted from Wikipedia, "Phorbas" · CC BY-SA 4.0
I.Argive kingship
In Pausanias' Argive king-list the succession runs from Phoroneus through Argus, who begat Peirasus and Phorbas; Phorbas begat Triopas, and Triopas begat Iasus and Agenor. Io, daughter of Iasus, is the princess whose wanderings link Argos to Egypt and to the return of Danaus.
Handbooks also present Phorbas as king of Argos and father of a Triopas who succeeded him, that Triopas being brother of Arestor. Lineage panels that synthesise Apollodorus' Criasus with Pausanias' house of Phorbas and Triopas place his reign after Criasus son of Argus.
II.Homonyms
The name Phorbas is extraordinarily crowded. This atlas entry (phorbas-argive) is the Argive king, ancestor of Triopas and Io — not Phorbas son of Triopas who cleared Rhodes of beasts, nor the Boeotian father of the Argo's helmsman Tiphys, nor the Trojan Phorbas whose son Ilioneus falls at Troy, nor Laius' shepherd who rescued the infant Oedipus, nor the many lesser Phorbases of Lesbos, Athens, Acarnania, and the Panes.