Seeds of Vernaccia and Malvasia dating back to approximately three thousand years ago were found in the well that served as a 'refrigerator' in a nuraghe near Cabras.
The carbon 14 test carried out by the Biodiversity Conservation Center of the University of Cagliari confirms the dating and suggests that vine cultivation on the island has been known since the Bronze Age.
[1] Other theories postulate that the name could be derived from other Latin words such as verrum, meaning boar, based on the beasts that are common in central Italy and known to trespass into vineyard and eat the grapes on the vine.
One other contending theory is that the village of Vernazza in the Cinque Terre region of Liguria on the northwest coast of Italy could be a potential origin and eponym for some of the Vernaccia grapes.
[1] Also like some styles of Sherry, Vernaccia di Oristano is intentionally aged in oxidative conditions being stored in barrels that are only partially filled--leaving substantial ullage or head space for oxygen to come into contact with the wine.
[1] This can add some complexity to the wine and the presence of nutty, sherry-like aromas and a deep golden color, particularly for the sweeter dolce styles.