Halirrhothius

Halirrhothius (/ˌhælɪˈroʊθiəs/; Ancient Greek: Ἁλιρρόθιος, Halirrhóthios, "sea-foam") was the Athenian son of Poseidon and Euryte or Bathycleia in Greek mythology. He was also called the son of Perieres and husband of Alcyone who bore him two sons, Serus and Alazygus. Another son of Halirrhothius, Samos of Mantinea was the victor of the four-horse chariot during the first Olympic games established by Heracles.