"The only pictorial documentation in Styria and the false equations with other varieties make it difficult to find out anything about the history of the hanging. Presumably we are dealing with a representative of the medieval group of varieties of Tressiaux or Trussiaux, who together with the groups of varieties "Les Pineaux" and "Les Gamez" moved from Despotat Romania (Albania) to the Angevin vineyards shortly after the Magdalene flood the Loire were exported. Yes "Les"! You read that right. We assume that there is no such thing as "the" Pinot, "the" Gamay or "the" Cot. Because in history one reads the names in the plural over and over again." (https://historische-rebsorten.de/rebsorte/blauer-haengling/)