a kindly sponsor or guardian; godfather.
a fairy-tale character who uses magical powers to help a hero or heroine.
Do Zoologists Pick Animal Names Like “Pink Fairy Armadillo”?Even scientists like to have fun with words to help us laymen folk truly understand the nuances of some of these rare animals.
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Examples from the Web for fairy godfather
I would have said fairy-godfather, but I have never come across a fairy-godfather in all my reading, and I must be truthful.The Romance of an Old Fool|Roswell Field