Actaeus

A son of Erisichthon, and according to Pausanias (Description of Greece) the earliest king of Attica. He had three daughters, Agraulos, Herse, and Pandrosus, and was succeeded by Cecrops, who married Agraulos. According to Apollodorus (III) on the other hand, Cecrops was the first king of Attica.

From Smith's Dictionary of Greek and Roman Biography and Mythology

From Description of Greece by Pausanias Book 1

(1.2.6) Amphictyon won the kingdom thus. It is said that Actaeus was the first king of what is now Attica. When he died, Cecrops, the son-in-law of Actaeus, received the kingdom, and there were born to him daughters, Herse, Aglaurus and Pandrosus, and a son Erysichthon. This son did not become king of the Athenians, but happened to die while his father lived, and the kingdom of Cecrops fell to Cranaus, the most powerful of the Athenians. They say that Cranaus had daughters, and among them Atthis; and from her they call the country Attica, which before was named Actaea. And Amphictyon, rising up against Cranaus, although he had his daughter to wife, deposed him from power. Afterwards he himself was banished by Erichthonius and his fellow rebels. Men say that Erichthonius had no human father, but that his parents were Hephaestus and Earth.

From Apollodorus Library Book 3. Continued

And Aeacus married Endeis, daughter of Sciron, by whom he had two sons, Peleus and Telamon. But Pherecydes says that Telamon was a friend, not a brother of Peleus, he being a son of Actaeus and Glauce, daughter of Cychreus.

Afterwards Aeacus cohabited with Psamathe, daughter of Nereus, who turned herself into a seal to avoid his embraces, and he begot a son Phocus.