another grape that may be related to nosiola is the ancient roman wine grape raetica that was reportedly the most widely planted white wine grape in northern italy during roman times. ampelographers have long thought that groppello di revò (which is grown in the val di non region of trentino) and nosiola (which is also known as groppello bianco) were descendants of raetica but so far there has not been any conclusively historical evidence or dna analysis to confirm that theory.