Pierus of Magnesia explained

In Greek mythology, Pierus (Ancient Greek: Πίερος Píeros) was the son of Thessalian Magnes. He was the lover of muse Clio and father of Hyacinth in some accounts,^[1] and Rhagus.

Mythology

Pierus was loved by muse Clio because Aphrodite had inspired her with the passion, as a punishment for deriding the goddess' own love for Adonis. This was the only myth where Pierus appeared once:^[2]

"Clio fell in love with Pierus, son of Magnes, in consequence of the wrath of Aphrodite, whom she had twitted with her love of Adonis; and having met him she bore him a son Hyacinth.."

Notes

1. [William Smith (lexicographer)|William Smith]
2. [Bibliotheca (Pseudo-Apollodorus)|Apollodorus]

References

• Pseudo-Apollodorus, The Library with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. Online version at the Perseus Digital Library. Greek text available from the same website.
• William Smith. A Dictionary of Greek and Roman biography and mythology. London (1873).