Battle
Yes, he had one daughter, Pallas, who was accidentally killed by his foster daughter, Athena, during a sparring match.
In Greek mythology when Athena is the daughter of Zeus, Poseidon being the brother of Zeus, is her uncle. However, myths exist which make Poseidon the grandfather of Athena when she is the daughter of his son Triton, or Poseidon is the father of Athena when her mother is Tritonis or Polyphe.
triton-born
For Zeus, we have Ares, Athena, Apollo, Artemis, Aphrodite, and, Dionysus. For Poseidon we have Theseus, Triton, Polyphemus.
Pallas (killed by Athena - often called her sister) was his (or Poseidon's) daughter with Tritonis. Kallistê (of island of Kalliste (now Santorini) in the Aegean Sea) - her mother is Libya. Triteia, also a daughter of Triton: loved by the god Ares and bore him a son named Melanippos, founder of the town which bears her name. Tritonides were also his daughters, called the servants of Galateia - or her sisters.
Yes, he had one daughter, Pallas, who was accidentally killed by his foster daughter, Athena, during a sparring match.
In Greek mythology when Athena is the daughter of Zeus, Poseidon being the brother of Zeus, is her uncle. However, myths exist which make Poseidon the grandfather of Athena when she is the daughter of his son Triton, or Poseidon is the father of Athena when her mother is Tritonis or Polyphe.
Yes, as Athena was Zeus's daughter in many myths. It may be that Athena's father is instead Poseidon or Triton, but it is unlikely that Rick Riordan knew of those versions in Greek myth.
triton-born
Usually, Triton.
Poseidon and Amphitrite had one son and a daughter - Rhode(daughter) and Triton(son).
In Greek Mythology, Athena is the daughter of Zeus and Metis (the latter was stuck inside of Zeus' head), and Triton is the son of Poseidon and Amphitrite, and Zeus and Poseidon are brothers. This means that Triton and Athena are actually first cousins, and yet they still married. (This may actually explain why they look so much alike, both having the red hair when Trition was younger.) However, most pictures of Athena, goddess of wisdom, do not look much like the Queen of Atlantica, and the queen may have just had the same name as the goddess, meaning Triton and his queen are unrelated.Her being unrelated to the Greek goddess of the same name is also supported by Graeco-Roman Mythology, where Triton and Athena were not married to each other.
Ares mated with Triteia, the daughter of Triton.
He married the nereid Amphitrite, they had the son Triton. Once Poseidon also made love to the beautiful Athena priestess Medusa in her temple. Athena got furious and changed Medusa into a monster.
Atlantis or a similar land. Her Father is King Triton. Her mother was the deceased Queen Athena. There is some spotty mythology here as Athena- protective Goddess of Athens, had nothing to do with mermaid legends.
For Zeus, we have Ares, Athena, Apollo, Artemis, Aphrodite, and, Dionysus. For Poseidon we have Theseus, Triton, Polyphemus.
Amphitrite is the wife of Poseidon and the mother of Triton. She is the daughter of the "Old Sea Man" Nereus.