http://www.romegeorgia.com/sevenhills.html

This is the first site I found that gives an explanation of the name. I was looking for the Seven Hills of Rome. In one of Clive Cussler's (geez, I can hardly believe that's anyone's real name, but apparently it is) books, he says there's a Seven Hills, Texas, named for the resemblance to the seven hills of Rome. I typed seven hills into the search window, and was told there were 674,000+ entries,
everything from the movie Seven Hills of Rome, to schools,
mental health centers, and pet shops.