Noun
(Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone
Source: WordNetAfter having stolen Helen, to be Theseus' wife, Theseus and Perithous, attempt to abduct Kore, for Perithous, but Aidoneus catches the two heroes, imprisons Theseus, and feeds Perithous to Cerberus. Source: Internet
Later, while a guest of Aidoneus, Heracles asks Aidoneus to release Theseus, as a favor, which Aidoneus grants. Source: Internet