What do you think of the name Niamh (a Gaelic name pronouced Neeve) Callahan for a baby girl?

My husband's family is Irish (so is mine, but much more distantly than his). His father was born in Ireland and all of his parents friends are Irish and live nearby. We live in Westchester County, just north of New York City, so there are plenty people of Irish ancestry around, but I still worry about my daughter constantly having to spell and pronounce her name.