Originally posted by olivant:
Guinea is a pejorative term for Sicilians. I don't remember Carlo's Italian derivation mentioned. Perhaps he was a Neapolitan.
I searched in a "surnames site" and I found out that RIZZI is a Nothern Italian surname (scarcely present in a couple of Southern regions, not at all in Sicily). So it is reasonable that Carlo felt himself different from those "Sicilian guineas" he came across with by marrying Connie.
Give a look to the site, I found it interesting! there's also a USA page, where you can spot Italian surnames in America!!!
http://www.gens.labo.net/it/cognomi/genera.html