Tempranillo shown no genetic connection between the cultivars. Spanish cultivation of "Vitis vinifera", the common ancestor of almost all vines in existence today, began in earnest with Phoenician settlement in the southern provinces. Later, according to the Roman writer Columella, wines were grown all over Spain; yet there are only scattered references to the name "Tempranillo". Ribera del Duero wine making extends back over 2,000 years, as evidenced by the 66-metre mosaic of Bacchus, the Roman god of wine, that was unearthed in 1972, at Baños de Valdearados. It is possible that this grape was introduced to the Western Hemisphere by
Peloursin California vineyards that thought they were planted with Durif/Petite Sirah were found to be field blends that contain some plantings of Peloursin. In addition to being a parent of Durif, Peloursin was also crossed with Persan to create Joubertin. DNA testing also suggest a relationship between Peloursin and Bia blanc which share some morphological similarities but the exact nature of that relationship is not yet known. Plantings of Peloursin are often confused with its offspring Durif and this was particularly the case in California where many plantings of Petite Sirah/Durif were discovered to actually be Peloursin. In the Jura region,