At the close of the "Shield" Heracles goes on to Trachis to the house of Ceyx, and this warning suggests that the "Marriage of Ceyx" may have come immediately after the `Or such as was' of Alcmena in the "Eoiae": possibly Halcyone, the wife of Ceyx, was one of the heroines sung in the poem, and the original section was `developed' into the "Marriage", although what form the poem took is unknown.