Nolwenn

In the verdant hills and misty shores of Brittany, Nolwenn is herself a gentle breeze blown by the winds of legend. Steeped in myth and mystery, her spirit is as pristine and adventurous as her homeland. When faced with life's tumultuous seas, the holy one from Noyal is the one who weathers the storm and guides us with radiant light.

Sounds masculine to me \:

I love this name so much that I called my daughter Nolwenn. We sometimes shorten it to Nolly.
I think it's magical, pretty and unusual all at once and she loves it.

This is a beautiful name! Rolls off your tongue gorgeously!

This name has a total Sorceress Morgana feel to it. It's just so Medieval and Magical. I think Morwenna and Nolwenn (similar-sounding and starting with consecutive letters in the alphabet) would make great twin names.

It actually looks and sounds rather Welsh to me.