Question: Who is Franziska Von Hohenheim's mother-in-law?
Sentence (from "Charles Eugene, Duke of Württemberg"): Charles Eugene (German: "Carl Eugen"; 11 February 1728 – 24 October 1793), Duke of Württemberg, was the eldest son, and successor, of Charles Alexander; his mother was Princess Marie Auguste of Thurn and Taxis.
Relevant evidence: Yes