Bronwen, -wyn is masculine. I've always thought it was pretty, but after reading How Green Was my Valley I like it even more, especially with that association. It's SO hard to pair though! The best I ever came up with was
Bronwen Fiona, but don't love that anymore.
Bronwen Marjorie just popped into my head, I like that a lot.
Phoebe I don't really like, it feels very airheady to me.
Love Nina! I like it as a nn for -ina names (
Georgina, specifically), but I think it's okay on its own too. An old combo of mine that always clicked that I still like is
Nina Bernadette. Never tried finding anything else.