Of course, Jack from Tennesse just might have somethin' to say about all this.

http:////www.straightbourbon.com/faq.html#1: FAQ's:
5. Why is this whiskey called bourbon? It takes its name from Bourbon County, located in the central Bluegrass region of Kentucky. It was formed from Fayette county in 1785 while still a part of Virginia and named to honor the French Royal Family
6. Is Jack Daniel's a bourbon? Jack Daniel's, is not considered a bourbon because it is charcoal-mellowed ... the process, called the Lincoln County Process ... But up to and after the charcoal filtering, the Jack Daniel's production is much the same as any other Bourbon. Jack Daniel's and George Dickel are two fine Tennessee Whiskeys though neither can be called bourbon.
12. Why isn't Jack Daniel's or George Dickel listed on this site? Because they are not bourbon. They are both Tennessee sour mash whiskies.

As to the legalese: http://www.straightbourbon.com/articles/ccname.html, about 4/5 of the way down the page: Today, 'bourbon' has a specific legal meaning that has little to do with its geographic origins. According to federal law, bourbon must be at least 51% corn, distilled at less than 160 proof, and aged for at least two years in new, charred oak barrels. (There are some other requirements, but those are the main ones.) Bourbon also must be made within the United States. In other words, a foreign product that meets all of the other requirements still can not be sold in the U.S. as bourbon.

Contrary to popular belief, there has never been a legal requirement that bourbon be made in Kentucky, which is why most Kentucky producers call their product 'Kentucky Bourbon.' Today there are very few examples of non-Kentucky bourbon left, but Virginia Gentleman is one.