I think
Gemma is kind of tough. I was playing with
Wilma last night and haven't found anything I'm really happy with yet. Looking at the suggestions you received,
Gemma Sophia,
Gemma Catherine and
Gemma Felicity were the ones I liked best, but the repeated "-a" ending with
Sophia bugs a bit. Your addition of
Everild solves that for me; it kind of takes the focus away from the second "-a". I think
Gemma Sophia Everild flows very nicely and I especially like the feel of
Gemma and
Sophia together.