I'd be extremely grateful if someone could identify this font for my wedding invitation. While it's calligraphic swash in nature, it has a little attitude and more our style than Snell Roundhand, etc.! Thank you in advance.

It's Avalon from Font Bureau - it's a wonderful font, likewise calligraphic and dramatic!

Look here:
http://www.fontbureau.com/fonts/font_frames.tpl?fontname=Avalon
but don't look the price.

But perhaps you'll like the Dobkin instead, it's calligraphic and somewhat dramatic too - just look my picture and the font here at abstractfonts.
http://www.abstractfonts.com/fonts/search/full_listing.htm?kw=dobkin

;) Ute

You are so kind to reply with so much information. Do you have Zapfino?

Thank you so much!