I had this debate over a bottle of wine with someone smarter than I last week. The discussion of "firsts," depending on where you live and who is telling the story can change dramatically, so the interwebs - which everyone knows is the possessor of all that is true - can sometime provide false information. The reality is the real beginning of the US Wine business has been butchered in history books and folk-lore. There is however a definitive rendering of the subject.
If you haven't ever read A History of Wine in America, I highly recommend spending the time to do so. I've even linked a free Google e-book to the above title so you have no excuse. The book sheds a bright spot light on the subject and will have you the envy at your next party where you win the attractive table centre piece for getting the right answer. That said, I know many of you are Cliff Notes kind of people and wont spend time in the book, so if you want the shortcut to the answer, read on.