In Greek mythology

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

, Megareus of Onchestus was king of Onchestus in Boeotia

Boeotia

Boeotia, also spelled Beotia and Bœotia , is one of the regional units of Greece. It is part of the region of Central Greece. It was also a region of ancient Greece. Its capital is Livadeia, the second largest city being Thebes.-Geography:...

. He was either son of Poseidon

Poseidon

Poseidon was the god of the sea, and, as "Earth-Shaker," of the earthquakes in Greek mythology. The name of the sea-god Nethuns in Etruscan was adopted in Latin for Neptune in Roman mythology: both were sea gods analogous to Poseidon...

 and Oenope, daughter of Epopeus

Epopeus

Epopeus was a mythical Greek king of Sicyon, with an archaic bird-name that linked him to epops , the hoopoe, the "watcher"...

, or of Onchestus (eponym

Eponym

An eponym is the name of a person or thing, whether real or fictitious, after which a particular place, tribe, era, discovery, or other item is named or thought to be named...

 of their kingdom), or of Apollo

Apollo

Apollo is one of the most important and complex of the Olympian deities in Greek and Roman mythology...

, or of Aegeus

Aegeus

In Greek mythology, Aegeus , also Aigeus, Aegeas or Aigeas , was an archaic figure in the founding myth of Athens. The "goat-man" who gave his name to the Aegean Sea was, next to Poseidon, the father of Theseus, the founder of Athenian institutions and one of the kings of Athens.-His reign:Upon the...

, or of Hippomenes. He came with his army to the assistance of Nisos

Nisos

In Greek mythology, Nisos was the King of Megara, and one of the four sons of Pandion II, King of Athens.He was married to Abrota, sister of Megareus, and when she died, Nisos commanded that the Megarian women wear clothes like she had. His daughter Eurynome, with Poseidon, had the famous son...

, husband of his sister Abrota

Abrota

In Greek mythology, Abrota was the daughter of Onchestus the Boeotian, sister of Megareus, and the wife of Nisos, king of Megara. On her death Nisos commanded all the Megarian women to wear a garment of the same kind as Abrota had worn, which was called aphabroma , and was still in use in the...

, against Minos

Minos

In Greek mythology, Minos was a king of Crete, son of Zeus and Europa. Every year he made King Aegeus pick seven men and seven women to go to Daedalus' creation, the labyrinth, to be eaten by The Minotaur. After his death, Minos became a judge of the dead in Hades. The Minoan civilization of Crete...

. In one version, he died in the battle, and the city of Nisa (Nisos' domain) was renamed Megara in his honor; in another, he married Iphinoe, daughter of Nisos, and succeeded to his father-in-law's power over Megara. His children by Iphinoe were Evippus, Timalcus, and Evaechme; he also had a son Hippomenes

Hippomenes

In Greek mythology, Hippomenes , also known as Melanion, was the husband of Atalanta.- Overview :When men who were struck by Atalanta's beauty watched her run through the forest, she became angry and told them "I will race anyone who wants to marry me! Whoever is so swift that he can outrun me will...

 by Merope. With the aid of the god Apollo

Apollo

Apollo is one of the most important and complex of the Olympian deities in Greek and Roman mythology...

, Alcathous

Alcathous, son of Pelops

Alcathous was in Greek mythology the son of Pelops and Hippodamia, and brother of Atreus and Thyestes. He first married Pyrgo and afterwards Euaechme, and was the father of Echepolis , Callipolis , Iphinoe , Periboea , and Automedusa .Pausanias relates that after Euippus, son of king Megareus,...

 killed the Cithaeronian lion, for which Megareus gave him his daughter Euaechme as a wife. He subsequently made Alcathous his successor, because his own sons did not outlive him: Evippus was killed by the lion, and Timalcus was slain by Theseus

Theseus

For other uses, see Theseus Theseus was the mythical founder-king of Athens, son of Aethra, and fathered by Aegeus and Poseidon, both of whom Aethra had slept with in one night. Theseus was a founder-hero, like Perseus, Cadmus, or Heracles, all of whom battled and overcame foes that were...

, having joined the Dioscuri in the campaign against him.