1. I love it, and the meaning is awesome.
2. nn
Ana? -It's alright.
3.
Anwen Morgana or
Anwen Calandra
4. I'd use it.
I have to say, I was thinking of the name Calandra the other day, it was in a baby name book years ago that I read and I loved it (I'm talking more than 10 years ago). But it doesn't show up as a name here so I thought it was made-up or something?! It's neat to see someone else use it!