The Pan-Ionian sanctuary of Poseidon on the Asiatic promontory of Mycale was regarded as perpetuating a cult from Peloponnesian Achaea, and the league of twelve cities which maintained it, as imitated from an Achaean dodecapolis, and as claiming (absurdly, according to Herodotus i.
His fathers took a prominent part in Athenian politics, and in 479 held high command in the Greek squadron which annihilated the remnants of Xerxes' fleet at Mycale; through his mother, the niece of Cleisthenes, he was connected with the former tyrants of Sicyon and the family of the Alcmaeonidae.
After the battle of Mycale (479 B.C.), Lampsacus joined the Athenians, but, having revolted from them in 411, was reduced by force.
That struggle was not terminated by the battle of Mycale and the capture of Sestos in 479 B.C. It continued for thirty years longer, to the peace of Callias (but see Callias and Cimon).
His chief sanctuary was at Mycale, where the Panionia, the national festival of the Ionians, was held.
In August he attacked the Persian position at Mycale on the coast of Asia Minor opposite Samos, inflicted a crushing defeat on the land-army, and annihilated the fleet which was drawn up on the shore.
By the battle of Plataea (479 B.C.), won by a Spartan general, and decided chiefly by the steadfastness of Spartan troops, the state partially recovered its prestige, but only so far as land operations were concerned: the victory of Mycale, won in the same year, was achieved by the united Greek fleet, and the capture of Sestos, which followed, was due to the Athenians, the Peloponnesians having returned home before the siege was begun.