This was a really interesting deity to work on, in part because there were multiple sources of information to draw upon. For one thing, Fionnghuala (pronounced Finella), is just about the only deity in Monster Mythology drawn from real-world mythology (Titania and Oberon are literary creations, perhaps based on mythological characters, but not in and of themselves from mythology). I slipped in some other literary mythology as well that seemed fitting. I also decided it made sense to allow half-elves to become swanmays in addition to humans, and I modeled a lot of the game stats on Mielikki.