Heracleidae is a musical with written by Euripides. It is based on in Greek mythology, the Heracleidae (/hɛrəˈklaɪdiː/; Ancient Greek: Ἡρακλεῖδαι) or Heraclids /ˈhɛrəklɪdz/ were the numerous descendants of Heracles (Hercules), especially applied in a narrower sense to the descendants of Hyllus, the eldest of his four sons by Deianira (Hyllus was also sometimes thought of as Heracles' son by Melite.)