His parents are Titans Cronus and Rhea.
Even though his father swallowed him, his brother Zeus, saved him.
He has five siblings Hestia, Demeter, Hera, Zeus, and Hades.
He is ancestor to the most fearsome monsters in Greek muthology.
Poseidon had an unstable love life but fathered many children.
He had three offspring with his wife Amphirite, the sea nymph.
One was a merman and a sea god named Triton.
Also, he had two children with his sister Demeter.
A divine horse Arion and a daughter named Despoina.
Poseidon and a beautiful woman named Medusa had two children.
A winged horse Pegasus and a son Chrysaor.
Gaia gave Poseidon two kids also.
Antaeus, a giant and Charybdis, a sea monster.
One of his most famous offspring would have to be the one-eyed Cyclops Polyphemus.
Who was blinded my Odysseus on his journey home.