I like it. I don't think feminized names like these are clunky. They seem elegant and actually rather pretty. I can easily see it on a woman of any age, even a little girl (they're a bit frilly and posh, though, but I feel the same about
Isabella,
Liliana,
Madeleine etc., that are already popular).
Not sure if I prefer Gilbertine of
Albertine (probably Gilbertine right now).
Geraldine would be the last because I'm not particularly fond of the sound of
Gerald.
