What was the noble family that XXX was from?
Princess Elisabeth Helene of Thurn and Taxis
Princess Elisabeth Helene of Thurn and Taxis (German: Elisabeth Helene, Prinzessin von Thurn und Taxis) (15 December 1903, Regensburg, Kingdom of Bavaria -- 22 October 1976, Munich, Bavaria, Germany) was a Princess of Thurn and Taxis by birth and a Princess and Duchess of Saxony, Margravine of Meissen, and titular Queen consort of Saxony through her marriage to Friedrich Christian, Margrave of Meissen.
Thurn und Taxis