Demophon of Athens

Demophon (Ancient Greek: Δημοφῶν/Δημοφόων) was a king of Athens, according to Pindar, son of Theseus and Phaedra, brother of Acamas. Some say that Demophon's mother was Iope, daughter of Iphicles. He fought in the Trojan War and was among those who entered the city in the Trojan Horse. The brothers freed their grandmother Aethra, who had been captured by the Dioscuri and served Helen as a handmaid for a while, and brought her home.
Demophon married Phyllis, daughter of a Thracian king (possibly of Sithon), while he stopped in Thrace on his journey home from the Trojan war. On the next day after the wedding, however, he had to leave, promising to return and take Phyllis with him as soon as possible. She gave him a casket and told not to open it unless he should lose every hope to return to Thrace. Demophon eventually settled in Cyprus and forgot about Phyllis. She would come to the sea shore every day, expecting to see the sails of his ship, but in vain. After the appointed...