The white grape variety (also Freiburg 339) is a new variety between Traminer(Gewürztraminer) x Riesling, which was confirmed by DNA analyses published in 2013. The crossbreeding was carried out in 1939 by Dr. Johannes Zimmermann (1907-1998) at the State Viticulture Institute in Freiburg (Baden-Württemberg). The name was given after the noble family of the same name, which had their seat at Zähringen Castle near Freiburg. She was a crossbreeding partner in the new breed Souvignier Gris. In the year 2016 no stocks were shown (Kym Anderson).