We never planned to have a third so names were all done and dusted. The other two just fell into place, all three names for them both but this has left us stumped.
#1 has a fairly common name using the Scottish spelling. It's a short name, quite a pretty name.
#2 has an unusual name, but common enough for most people to know how to say it, it's Welsh and there are at least two well known presenters with this name. It's another pretty name. We're English, although have Welsh family both sides, but the name is not so Welsh that it is silly on an English child.
We're thinking of something that matches the brief #2 fits - unusual but not obscure, maybe Welsh (or any other British) but not difficult for the English to pronounce or sound silly on an English child.
Mum has told me today we need to use as many letters of the alphabet as possible but it has to be easy to say so that when people are shocked and say "How are you supposed to say that?!" you can say "It's easy it's..." 
I love the idea but not that mean and it'd probably fall into the silly on an English child name!
So go on MNers, inspire me!