Pirithous

Early years

According to Homer, Dia had sex with Zeus, who was disguised as a stallion, and gave birth to Pirithous; a folk etymology derived Pirithous' name from peritheein (περιθεῖν "to run around"), because that was what Zeus did to seduce Dia.

His best friend was Theseus. In Iliad I, Nestor numbers Pirithous and Theseus "of heroic fame" among an earlier generation of heroes of his youth, "the strongest men that Earth has bred, the strongest men against the strongest enemies, a savage mountain-dwelling tribe whom they utterly destroyed". No trace of such an oral tradition, which Homer's listeners would have recognized in Nestor's allusion, survived in literary epic.

In disjointed episodes that have survived, Pirithous had heard rumors about Theseus' courage and strength in battle but he wanted proof. He rustled Theseus' herd of cattle from Marathon, and Theseus set out to pursue him. Pirithous took up arms and the pair met, then became so impressed by each other they took an oath of friendship. They were among the company of heroes that hunted the Calydonian Boar, another mythic theme that was already well-known to Homer's listeners.

Centauromachy

Later, Pirithous was set to marry Hippodamia (offspring: Polypoetes). The centaurs were guests at the party, but they got drunk and tried to abduct the women, including Hippodamia who was carried off by the intoxicated centaur Eurytion or Eurytus. The Lapiths won the ensuing battle, the Centauromachy, a favorite motif of Greek art.^[4]

Pirithous, Hippodamia (here labeled under the name Laodameia), a Centaur, and Theseus, on an Apulian red-figure calyx-krater, 350-340 BC

Punishment in the Underworld

Hippodamia died shortly after Polypoetes' birth^[5]. Thus, Pirithous and Theseus pledged to carry off daughters of Zeus. Theseus chose Helen of Sparta and together they kidnapped her when she was 13 years of age and decided to hold on to her until she was old enough to marry. Pirithous chose a more dangerous prize: Persephone herself. They left Helen with Theseus' mother, Aethra at Aphidnae, and traveled to the underworld domain of Persephone and her husband Hades. When they stopped to rest, they found themselves unable to stand up from the rock as they saw the Furies appear before them.

Heracles freed Theseus from the stone, but the earth shook when he attempted to liberate Pirithous.^[6] He had committed too great a crime for wanting the wife of one of the great gods as his own bride.^[7] By the time Theseus returned to Athens, the Dioscuri (Helen's twin brothers Castor and Pollux) had taken Helen back to Sparta; they had taken captive Aethra as well as Physadeia, the sister of Pirithous, and they became handmaidens of Helen and later followed her to Troy.^[8]

The friendship of Theseus and Pirithous acquired homoerotic undertone in the realm of Attic comedy, in which Heracles attempted to free them from the rock to which they had been bound together in the Underworld (for having tried to carry off Persephone). He succeeded in freeing only Theseus and left behind his buttocks attached to the rocks. Due to this Theseus came to be called hypolispos, meaning "with hinder parts rubbed smooth."^[9][10]

Pirithous was worshiped at Athens, along with Theseus, as a hero.^[11]