No myth states that the marriage of Poseidon and Amphitrite ended.
A myth.
Poseidon is a myth.
In ancient Greek myth, Poseidon did not die.
No Zeus did not kill Poseidon in Greek myth.
Poseidon.
In Greek myth Poseidon has had both sons and daughters.
i do not think Poseidon or Neptune(same thing) has a myth
No myth gives the birth-day or year of Poseidon's life.
Greek myth does not say.
Neptune
Not in Greek myth, he is a priest of Poseidon.