The Petit Verdot (PV) grape’s origins in France date back to the 16th/17th century. The grape is believed to be the child of a grape called Balisca, which originated in Albania, and it was believed to have been brought to France by either the Romans or Greeks.
Many wines that you are familiar with are blends including wines from Bordeaux and the Rhone valley. Wines labelled as Meritage, Cava and Port are blends. Champagne, Rioja and Priorat can be blends, too.