Benthesicyme

Mother: Amphitrite

Father: Poseidon

Siblings: Aethusa, Agenor, Aloeus, Amycus, Antaeus, Arion, Asopus, Augeas, Belus, Busiris, Cenchrias, Cercyon, Charybdis, Chrysaor, Cromus, Cteatus, Cychreus, Dercynus, Ephialtes, Epopeus, Erginus, Eryx, Eumolpus, Euphemus, Eurypylus, Eurytus, Halirrhothius, Hippothoon, Hippo, Hopleus, Hyperenor, Hyrieus, Ialebion, Ida, Leches, Lelex, Lycus, Mygdon, Nauplius, Neleus, Nireus, Orion, Otus, Pegasus, Pelias, Peratus, Periclymenus, Phineus, Poltys, Polyphemus, Proteus, Rhode, Sarpedon, Sciron, Taphius, Thasus, Triops, Triton

Foster/step child: Eumolpus

Ethiopia

1. Poseidon entrusts Eumolpus to Benthesicyme to bring up
2. When Eumolpus grows up, Benthesicyme’s husband gives him one of their two daughters as a wife

Apollodorus - Library and Epitome: Library, Section 15.4