Here are more samples:
http://dracohermione.org
http://webcontent.harpercollins.com/images/large/0060936266.jpg (See "One Man's Bible")

I really need help in identifying this font... some sort of calligraphic font, I guess... I'm in charge of designing my aunt's wedding invitations, and I would really love to use this font.

Any help will be greatly appreciated. Thanks in advance!

I don't know the exact font you are searching for - but there are a lot of similarities (that g for example) that you can find in the Lintotype Zapfino family
http://www.myfonts.com/fonts/linotype/zapfino/

and yes, it's commercial...

La Figura is the one you are looking for.

Yes. Commercial too.

Nice find KKat ;)

Thank you muchly for the help! I really, really appreciate it.

Heron2001: When I checked out the Linotyoe Zapfino, I realized that that was another font I'd been looking for a long time ago but had forgotten about. A bit of telepathy you had there, haha. Thank you!

koeiekat: Yes, that's it! That's the one. Out of the hundreds of calligraphic fonts out there, it's amazing that you were able to ID it so quickly. You just saved me a couple dozen hours of sifting through font sites. Thank you!

You're welcome.