Just be careful if you live outside Wales. I do and had a very interesting time testing names out on people before children were born. As I am used to reading Welsh words, I couldn't see how names like Eleri, Nia, Eira, Catrin, Elin etc could be said incorrectly - but you would be suprised!!!
We went for Anwen Carys in the end (and she gets called Olwyn, Ann, and most the one that gets on my nerves the most is AnwYn - especially by my MIL!! Grrrr. Can't she tell the difference between an E and a Y?????? But there are so many beautiful Welsh names, you'll be able to choose a really individual gorgeous name.