Title: Eryxo
Content:  Eryxo was the only daughter and youngest child to Cyrenaean Princess Critola and her father was a Cyrenaean noble whose name is unknown. Her father was murdered in 550 BC, by Learchus who became a rival to Cyrenaean King Arcesilaus II. Plutarch states her eldest brother was called Polyarchus and the historian states she had other brothers, but the historian doesn't give their names. Her maternal grandfather was the second Greek Cyrenaean King Arcesilaus I, however her maternal grandmother is unknown. Through her mother, she was a great granddaughter of the first Greek King and founder of Cyrene, Battus I.
Title: Eryx (mythology)
Content: Eryx, a king of the city of Eryx in Sicily. He was either the son of Poseidon or of Aphrodite and  Butes the Argonaut of the Elymian people of Sicily who she spent several nights with at Lilybaeum to make Adonis jealous.  Eryx was an excellent boxer but died when Heracles beat him in a match. ; Eryx, one of the supporters of Phineus, was turned to stone by Perseus with the head of the Gorgon Medusa. In Greek mythology, Eryx (Ancient Greek: Ἔρυξ) may refer to the following personages: 
Title: Eryxo
Content:  Before 560 BC, she married her maternal cousin Cyrenaean Prince Arcesilaus II, who was the son of Cyrenaean King Battus II who was her maternal uncle. Eryxo and Arcesilaus had a son called Battus III. Plutarch describes her as a ‘noble, modest and courteous woman’.
Title: Eryx (Sicily)
Content:  Another legend, followed by Diodorus, ascribed the foundation both of the temple and city to an eponymous hero named Eryx, who was said to have received Hercules on his visit to this part of Sicily, and contended with that hero in a wrestling match, but was vanquished by him. This Eryx was a son of Aphrodite and Butes, a king of the country, and is hence repeatedly alluded to by Virgil as a brother of Aeneas, though that poet does not refer to him the foundation of the city. The legends which connected it with Aeneas and a Trojan chief 
Title: Eurytus of Oechalia
Content:  Eurytus was the son of Melaneus either by Stratonice, daughter of King Porthaon of Calydon and Laothoe or by the eponymous heroine Oechalia. He married Antiope, daughter of Pylon (son of Naubolus) and had these children: Iphitus, Clytius, Toxeus, Deioneus, Molion, Didaeon, Hippasus and a very beautiful daughter, Iole. A late legend also attributes Eurytus as the father of Dryope, by his first wife. Hesiod calls his wife Antioche and they had four sons but Creophylus says only two. Eurytus' grandfather was Apollo, the archer-god, and was also a famed archer. Eurytus has been noted by some as the one who taught Heracles the art of archery.
Title: Erysichthon of Thessaly
Content:  Erysichthon was the son of Triopas   possibly by Hiscilla, daughter of Myrmidon and thus, brother to Iphimedeia and Phorbas. In some accounts, however, he was called instead the son of Myrmidon possibly by Peisidice, daughter of Aeolus and Enarete, and thus, brother to Antiphus, Actor, Dioplethes, Eupolemeia and Hiscilla.
Title: Eryxo
Content:  Eryxo (flourished 6th century BC) was a Greek woman, who was a Queen of Cyrenaica and was a member of The Battiads dynasty, the family that ruled Cyrenaica and Cyrene. From the ancient Greek sources, she appears to be the first Greek Cyrenaean Queen mentioned from the dynasty.
Title: Eurytion (king of Phthia)
Content:  Eurytion was the swift son of either of Irus and Demonassa, or of Kenethos and Cerion, and father of Antigone. His father was also called Actor, king of Phthia who otherwise known as his grandfather for Irus was the son of Actor. If Eurytion's father was Irus, he was the brother of Eurydamas, also an Argonaut.
Title: Erythras
Content: Erythras, son of Poseidon and Amphimedusa, daughter of Danaus. ; Erythras, son of Leucon. One of the suitors of Hippodamia, killed by Oenomaus. ; Erythras, the Thespian son of Heracles and Exole, daughter of King Thespius of Thespiae. Cleolaus and his 49 half-brothers were born of Thespius' daughters who were impregnated by Heracles in one night, for a week or in the course of 50 days while hunting for the Cithaeronian lion. Later on, the hero sent a message to Thespius to keep seven of these sons and send three of them in Thebes while the remaining forty, joined by Iolaus, were dispatched to the island of Sardinia to found a colony. ; Erythras, a Persian by birth, son of Myozaeus. Erythras (Ancient Greek: Ἐρύθραν) was a name attributed to three men in Greek mythology. 
Title: Erytheia (mythology)
Content: Erythia, also called Erytheis (Ερυθεις), one of the Hesperides (Nymphs of the West). She was the mother of Eurytion by Ares. ; Erythia, daughter of Geryon and mother, by Hermes, of Norax, the man who led the Iberians to Sardinia. ; Erythia, the home of the above three-bodied giant Geryon. In Greek mythology, Erythia or Erytheia or Erythea (Ancient Greek: Ερυθεια from erythos "red") may refer to the following figures: 

Question: Who is the father of Eryx?
Answer: Poseidon.
Posidon.