We have the same Caporalette ancestor. David Caporalette is my gr-gr-gr-grandfather. I'm afraid I'm stuck at this point. I live in Melbourne, Australia and there is a large group of his ancestors here. James Caporalette, David's son, changed his surname to Cottrell and his descendents have been known as Cottrell ever since.
In fact, a Yahoo Group has just been set up by someone in Melbourne with Cottrell's in his family. Send me an e-mail if you're interested.