Hello,
this is what I found

ABBONDANZIERI
Molto raro, ha un ceppo tra le province di Pesaro ed Ancona ed uno in provincia di Roma.
integrazioni fornite da Stefano Ferrazzi
Molto raro, presente quasi esclusivamente nel Lazio e nelle Marche, deriva da una forma alterata del nome augurale ...

I would like to state that my last name literally means abundance . Now, obviously my last name would be Abbondanza, but when my great-grandfather came over from Catania, Sicily it was spelled Baudanza. @ Ellis Island it was then changed to Bandanza which is my official last name. The Sicilian ...

Hmm ... It seems like nobody has any information and all the people with the name Abbondanza could perhaps be inactive for the time being. I will just have to wait and see.

Just a link I thought I would share to anyone that is interested.

Associazione AMICI e DISCENDENTI degli ESULI Giuliani, Istriani, Fiumani, Dalmati.

I would like to state that my last name literally means abundance . Now, obviously my last name would be Abbondanza, but when my great-grandfather came over from Catania, Sicily it was spelled Baudanza. @ Ellis Island it was then changed to Bandanza which is my official last name. The Sicilian ...