son of Ixion , king of the Lapithœ , husband of Hippodamia , and friend of Theseus. After the death of Hippodamia , he descended , in company with Theseus , to the infernal regions , to carry away Proserpine; but was , together with Theseus , seized and detained in chains. Theseus was afterwards delivered by Hercules , who vainly endeavored to save Pirithoüs also

http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n36401.0 an entity of type: LexicalSense

son of Ixion , king of the Lapithœ , husband of Hippodamia , and friend of Theseus. After the death of Hippodamia , he descended , in company with Theseus , to the infernal regions , to carry away Proserpine; but was , together with Theseus , seized and detained in chains. Theseus was afterwards delivered by Hercules , who vainly endeavored to save Pirithoüs also 
son of Ixion , king of the Lapithœ , husband of Hippodamia , and friend of Theseus. After the death of Hippodamia , he descended , in company with Theseus , to the infernal regions , to carry away Proserpine; but was , together with Theseus , seized and detained in chains. Theseus was afterwards delivered by Hercules , who vainly endeavored to save Pirithoüs also 

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