In Greek mythology, Pyrrhus is the grandson of what immortal nereid?
Pyrrhus (Royer) Pyrrhus is an opera by the French composer Joseph-Nicolas-Pancrace Royer, first performed at the Académie Royale de Musique (the Paris Opera) on 26 October 1730. It takes the form of a "tragédie en musique" in a prologue and five acts. The libretto, by Fermelhuis, is based on the Greek myth of Pyrrhus, son of Achilles.
Pierus (father of Hyacinth) In Greek mythology, Pierus or Pieros (Ancient Greek: Πίερος ) was the son of Thessalian Magnes. He was the lover of muse Clio and father of Hyacinth in some accounts, and Rhagus .