Thaumas

Mother: Gaia

Father: Pontus

Siblings: Agrius, Alcyoneus, Anax, Arges, Briareus, Brontes, Ceto, Charybdis, Clytius, Coeus, Cottus, Crius, Cronus, Dione, Echidna, Enceladus, Ephialtes, Erechtheus, Eurytus, Eurybia, Gration, Gyes, Hippolytus, Hyperion, Iapetus, Mimas, Mnemosyne, Nereus, Oceanus, Pallas, Phoebe, Phorcus, Polybotes, Porphyrion, Rhea, Steropes, Tethys, Themis, Thia, Thoas, Triptolemus, Typhon

Children: Aello, Iris, Ocypete

Nowhere

1. Phorcus, Thaumas, Nereus, Eurybia and Ceto are born
2. Iris is born
3. The Harpies are born

Apollodorus - Library and Epitome: Library, Section 2.6