I'm only 9 weeks but expect I'll have a girl again as DH has produced two with me already (is that right? Or could it actually be a boy?!).
Anyway genetics aside, I'm pretty sure we'll be using Nancy as I'm still sad we didn't use it with our last DD. She didn't really look like one and DH wasn't keen (though now he is 
).
But middle names? So far I like:
Nancy Lauren
Nancy Kate (I'm a Katherine)
Nancy Cordelia
Nancy Iona