I like it a lot, mostly for a girl, thought it could work just fine for a boy too, there is something undeniably femmy about it for me. I think it's the e on the end. It makes me think of flowers and pretty wrought-iron fences. No sense, I know.
The only probalem I have with it is that as soon as I combo it, it starts to look like a contraction of "poor". Something like, say, Poe
Lydia is "Po'
Lydia". It saddens me! I like it best as a middle-name-first name. So,
Lydia Poe, called Poe. For example.