Pie, in a thread above you suggested
Anwen as a possible choice instead of
Arwen, and here we find two Anwens and an Arwyn among the parents! Good timing ...
Can you put me straight about something? I taught a girl some years ago who called herself
Ann but it seems that her actual given name was Annwen with two Ns instead of one. Could that exist as a variant, or was it just a family choice? I think her surname was Davies, but I'm not sure any more.
And another thing: wasn't the underworld or part thereof called Annwn? Is there any connection? Seems a gloomy kind of name, if so. This site gives the meaning of
Anwen as Very Beautiful, but I suppose it's just as well to stay on the right side of the powers of darkness - like calling the Furies the Eumenides!