I'm glad you're not asking me to work with
Taylor. :-P
I would go with (including middle names):
BronwenCatharine Elaine
I love
Elaine but it's an odd one for me to pair with any siblings; I can't figure out if I think it's "retro" or "dated."
Bronwen doesn't 'fit' much of what I like so it was as good time to use it as any.