Infidel, a Red Wine Grape

CNN's iReporters have spent three years trying to find out what the name of a grape means. They found several varieties that looked like infidel, but said they were false alarms. But one vine was so distinctive it could be sinfondel or tribadrag - which has been sitting in a museum for more than 100 years. The researchers are now looking into whether there is any truth behind their suspicions.