So now that DC1 is officially on the way AND that DH has come up with acceptable suggestions, I would love to hear your opinions on our list:
Ysolde (or Isolde or Essyllt but prefer the Y spelling because it is the same initial as my DM)
Anouk
Beryl (nn Berry?) - I read horrible reviews dating back to a few years ago, does MN still hate Beryl? 
Marielle
Adelaide (nn Ada?)
Willa
Gustave (nn Gus)
Alistair
Isaac
Piers
Maximilian (nn Max)
Yves
Gweltaz (how easy would it be for you to spell/pronounce?)
We are not in the UK - but may very well move back there soon. Potential mn are Ellen/Lena/Helena, Yvonne, Louis/Louise/Louisa, Martha, Eva, Ann/Anna, Allen/Alan, Morris, Robert, Alexander(a).
Help me pick a combination for both boy or girl as we will not be finding out before DC1 is here!
Thank you!