There are three children of the sixth generation: Stefanie married the Austrian winemaker Alwin Jurtschitsch and is now cellar master at that estate in Kamptal, Austrial.
The name of the estate owner Gunderloch had become known since 1925 by the comedy The Merry Vineyard [de] written by Carl Zuckmayer.
In the course of the 1970s the Geisenheimer Fritz Hasselbach saw the importance of the international printed wine media as a marketing instrument for estates and their top vineyards.
In 1979 Agnes and Fritz Hasselbach decided to invest in their winery and to quit their jobs as a teacher in a private school and in the former Landeslehr- und Versuchsanstalt für Wein- und Gartenbau (“federal experimental station for viticulture and horticulture”) in Oppenheim, today: Dienstleistungszentrum Ländlicher Raum [de].
During the years, important networks to leading wine critics like Stuart Pigott were established and maintained.