I have a problem with it as a full fn, as in Britain children often call their granmother
Nan. As a nn it would be ok, but please not for Nannerl! I'm from Germany, and Nannerl, aswell as
Gretchen and
Liesel, are just awful! You will hardly find a child called
Greta, let alone
Gretchen or
Liesel. Nannerl is not used at all. It sound even nn-yer than
Nan. I agree with Narinoc on the suggestions. Everything with the -na or -an will work.

