I like it! I'm one of a few people around here who do, it seems. I love Irish names too, and I think this is one that could be pulled off in some place such as the US.
Sibling names are kind of hard. I guess something Irish but that would also be manageable outside of
Ireland:
Ciarán
ConnorDáire
DiarmaidOisín
SeamusSean
BridgetFinolaFionaHonoraNoraMáire
MauraMaureenMorna