We might be closely related for all I know. The Rizzis I am related to are in your neck of the woods. Your name doesn't sound familiar, though. My Rizzis were also from Campobasso.
My paternal grandmother was born Caterina Rizzi, buried in Darwell, west of Edmonton. She was one of 5 kids. They all used to live in Sterco, a little mining town in the bush somewhere.
Her father was Peter Rizzi, married to Maria D'Angelo. I can find out more, but I suspect you might have more information than that already. I know a bit about Peter Rizzi that might be interesting if you are related to him. For instance, he layed cable on the bottom of New York harbour upon arriving in the US. Interresting stories. If you know more than I do, or we are not remotely related, let me know.