What was XXX's child's name?
Erechtheus
Erechtheus (/ɨˈrɛkθjuːs, -θɪəs/; Ancient Greek: Ἐρεχθεύς) in Greek mythology was the name of an archaic king of Athens, the founder of the polis and, in his role as god, attached to Poseidon, as ``Poseidon Erechtheus''.