The red grape variety originates from France. Synonyms are Belossard, Blue Thuner, Chatille, Corsin, Duresa, Duret, Dureza, Durif, Feunette, Fumette, Gronnay, Gros Béclan, Gros Nat, Gros Noir, Gros Plant, Mauvais Noir, Mosaguin, Parlouseau, Pellorcin, Pelorsin, Pelossard, Peloursin Noir, Pourret, Pourrot, Thuner, Thuner Rebe and Tinta Roriz de Penajoia. The parentage is unknown. It must not be confused with the Béclan, Bia Blanc, Dureza, Durif or Poulsard varieties, despite seemingly suggestive synonyms or morphological similarities. Peloursin was a crossing partner of the two new varieties Durif and Joubertin. There is also a variety Peloursin Gris; nothing is known about a possible connection.