Who married Poseidon?

Answer 1

Poseidon really had no wives he had consorts

His consort was Amphitrite, a nymph and ancient sea-goddess, daughter of Nereus and Doris.

Poseidon was the father of many heroes. He is thought to have fathered the famed Theseus.

A mortal woman named Tyro was married to Cretheus (with whom she had one son, Aeson) but loved Enipeus, a river god. She pursued Enipeus, who refused her advances. One day, Poseidon, filled with lust for Tyro, disguised himself as Enipeus, and from their union were born the heroes Pelias and Neleus, twin boys. Poseidon also had an affair with Alope, his granddaughter through Cercyon, begetting the Attic hero Hippothoon. Cercyon had his daughter buried alive but Poseidon turned her into the spring, Alope, near Eleusis.

Poseidon rescued Amymone from a lecherous satyr and then fathered a child, Nauplius, by her.

After having raped Caeneus, Poseidon fulfilled her request and changed her into a male warrior.

Not all of Poseidon's children were human. In an archaic myth, Poseidon once pursued Demeter. She spurned his advances, turning herself into a mare so that she could hide in a herd of horses; he saw through the deception and became a stallion and captured her. Their child was a horse, Arion, which was capable of human speech. Poseidon also had sexual intercourse with Medusa on the floor of a temple to Athena. Medusa was then changed into a monster by Athena. When she was later beheaded by the hero Perseus, Chrysaor and Pegasus emerged from her neck. There is also Triton, the merman; Polyphemus, the cyclops; and Oto and Ephialtae, the giants. from whom bore his children.