Hmm, for a girl I might go for a mythological name. Let's try:
HeraNyxGaiaAphroditeBellonaPersephone
For a boy, I'm less sure. Maybe Breton, like
Yann? I'll go:
LoicCorentinPer /
PerigAodran
Donan (this one really fits with
Yann, for me)
Laen
Tadeg
Thurian
I really don't know, though.