A Suckling Man represents Poseidon and Anteros, whom Poseidon had with another male sea deity Nerites.
According to one version, Poseidon had a relationship with another male sea deity, Nerites. The relationship gave birth to Anteros, the god of requited love. The myth does not tell how childcare and upbringing was organized, but in this drawing, the role of wet nurse has been given to Poseidon because he is also the god of springs and makes them gluck.