Who? The guy whose name was given to the Americas (based on the Latinized version of his name - Americanus), which is why we don't call the continent(s) "Columbiana" or something similar. (Wouldn't it have been interesting to call it "Eriksonia"?)
So just what does "Amerigo" mean? Well, it's the Italian version of Emmerich. "Emmerich"? Yeah, I don't know anyone named "Emmerich", but it apparently means one of the following:
- "Universal power"
- "Work power"
- "Home power"