The red grape variety originates from France. Synonyms grouped alphabetically by country are Courbu Rouge, Gascon, Mansenc Noir, Manseng Rouge, Noir du Pays (France); Espadão, Espadeiro Mole, Espadeiro Molle, Padeiro de Basto, Padeiro Tinto, Verdelho da Sombra, Vinhão Mole (Portugal); Caíño do Freixo, Espadal, Ferrol, Ferrón, Tinta dos Pobres (Spain). Despite seemingly suggestive synonyms or morphological similarities, it should not be confused with the varieties Arrouya, Courbu Noir (Noir du Pays) or Espadeiro. According to DNA analyses carried out in 2007, there is a parent-offspring relationship with the Tannat variety. However, there is no relationship (as one might assume from the names) to the two varieties Gros Manseng and Petit Manseng.
For me, Lexicon from wein.plus is the most comprehensive and best source of information about wine currently available.Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)