The back story here is that this is a supposed portrait of my 2x great grandfather. I hadn't seen this portrait in about twenty years, and my grandmother used to claim that her grandfather (the man in the portrait) held some type of noble title in Italy. My mother never believed the story, and heard from her aunt that the man in the portrait was in the military, but nothing more.
Picture quality isn't great, but if anyone could help with any information (e.g. rank, unit, etc.), it would be greatly appreciated:
The cap ornament looks like he could be Bersaglieri, but they normally wear a black cockade and not a green one.