The red grape variety comes from the Iberian Peninsula, probably from Spain. Synonyms are Fernão Pires Tinta, Jaen, Jaen du Dão, Jaen Galego, Jaen Galeno, Loureiro Tinto (Portugal); Jaén Tinto, Mencía Pajaral, Mencía Pequeno (Spain). It must not be confused with the varieties Juan García, Jaén Tinto and Loureiro Tinto, despite the fact that synonyms or morphological similarities appear to indicate this. According to DNA analyses carried out in 2015, it is probably a natural cross between Alfrocheiro x Patorra. The variety was first mentioned in the province of León in north-western Spain at the end of the 19th century, where it is thought to have originated. It is believed that it was brought to the Dão region of Portugal by pilgrims on their way back from Santiago de Compostela. Many genetic variations of the variety in Spain indicate its Spanish origin, which is regarded as an indication of its place of origin.