The name Eowyn is a girl's name meaning "horse lover". Eowyn and is often added to lists like Fictional Princess Names and discussed in our forums with posts like "Names on NB that make you go WOW!".
From the experts:
A literary name created by J. R. R. Tolkien for a Lord of the Rings noblewoman of Rohan. Pronounced Ay-oh-win, it would make an interesting if somewhat challenging choice.