Allison, i think Killian is cute. It sounds like an Irish name, and since my background is Irish, i'm a little partial, hehe. But whether it really is Irish or not, I have no idea. I think there's a beer called Killian's Irish Red... maybe that's where I'm getting that from.
Although funny thing is, I'm not picking any Irish names for my own kids, or at least I dont think... I'm 3/4 Irish, but my husband is 3/4 Italian, so we probably won't name our kids based on either background. I tend to be more the sentimental type when it comes to names though (less into trendy). I'm not super secretive, so I dont mind saying what we've thought of.
Girl: Rose Olivia (still working with middle names, but first name will be Rose for sure)
Boy: Miles Steven (this is a maybe - we just started throwing boy names around recently, so this could very easily change, but we agreed we both like Miles at least).