Thomas Jefferson was America’s first wino/wine geek/vinophile, so it’s far from surprising that he planted his own vineyard — way back in 1774. Jefferson and Italian Filippo Mazzei planted the vineyard right next to Monticello — and today Jefferson Vineyards resides on the same plot of land. Of course, the vines they use today aren’t from 1774, but they do date to 1981. As 50 in 50 has unfolded, I’ve found the wines a bit disappointing — whether too sweet for the acidity level, boring and lifeless, or just plain faulty. So far, the stars have been the wines from…