Rhiannon is a character in the 1973 science fiction novel Triad by Mary Leader. Stevie liked the name so much that she wrote the song that became the classic “Rhiannon.”
Years later, Stevie learned that Rhiannon was a Welsh deity in Celtic mythology. The striking similarities between the song “Rhiannon” and Rhiannon of the Welsh stories inspired Stevie to write several more songs about Rhiannon, the Welsh horse goddess. Most of these songs remain unreleased. “[Rhiannon] sounded so free, with personality traits of my own, about a woman who is into her own trip.” (Tower, 1977).
Stevie hopes to produce a musical based on her unreleased “Rhiannon” songs someday.
Reference
Tower, M. (1977, August 19). For Stevie Nicks, talk is no longer cheap. Scottsdale Daily Progress