Blaufränkisch is a parent to Zweigelt, the most widely planted red grape in Austria, from a crossing with St. Laurent (also known as "Sankt Laurent") done in 1922 by Dr. Fritz Zweigelt at the Klosterneuburg research facilities in Vienna. This same Blaufränkisch x Sankt Laurent pairing was used to produce the Czech/Slovak grape André. Dr. Zweigelt also crossed Blaufränkisch with Blauer Portugieser to produce Blauburger, with August Herold using the same pairing to produce Heroldrebe in 1929 at the Weinsberg research center in Baden-Württemberg. Also at Weinsberg, Blaufränkisch was crossed with Dornfelder to produce Acolon, and with Cabernet Sauvignon to produce both Cabernet Cubin and Cabernet Mitos in 1970.