I don't like
Morrigan at all. It sounds like
Morgan, a name I also dislike, plus with a wannabe-Celtic, literary-geek vibe to it.
I do like your boy's combo.
Anna MorriganClaire MorriganElla MorriganFaith MorriganGrace MorriganHannah MorriganJulia MorriganKate MorriganLily MorriganRose Morrigan