Amphitryon (Ancient Greek: Ἀμφιτρύων, usually interpreted as "harassing either side"), in Greek mythology, was a son of Alcaeus, king of Tiryns in Argolis.
Having accidentally killed his father-in-law Electryon, king of Mycenae, Amphitryon was driven out by Electryon's brother, Sthenelus. He fled with Alcmene, Electryon's daughter, to Thebes, where he was cleansed from the guilt of blood by Creon, king of Thebes.
Alcmene, who was pregnant and had been betrothed to Amphitryon by her father, refused to marry him until he had avenged the death of her brothers, all but one of whom had fallen in battle against the Taphians. It was on his return from this expedition that Electryon had been killed. Amphitryon accordingly took the field against the Taphians, accompanied by Creon, who had agreed to assist him on condition that he slew the Teumessian fox which had been sent by Dionysus to ravage the country.
The Taphians, however, remained invincible until Comaetho, the king's daughter, out of love for Amphitryon cut off her father's golden hair, the possession of which rendered him immortal. Having defeated the enemy, Amphitryon put Comaetho to death and handed over the kingdom of the Taphians to Cephalus. On his return to Thebes, he married Alcmene, who gave birth to twin sons, Iphicles and Heracles. Only the former was the son of Amphitryon because Heracles was the son of Zeus, who had visited Alcmene during Amphitryon's absence. He and Alcmene also had a daughter named Laonome.
He fell in battle against the Minyans, against whom he had undertaken an expedition, accompanied by the youthful Heracles, to deliver Thebes from a disgraceful tribute.
Iphicles (son by Alcmene)