Question: What is the date of death of Duke Ferdinand Frederick Augustus Of Württemberg's father?
Sentence (from "Frederick II Eugene, Duke of Württemberg"): Friedrich Eugen, Duke of Württemberg (21 January 1732 – 23 December 1797) was the fourth son of Karl Alexander, Duke of Württemberg, and Princess Maria Augusta of Thurn and Taxis (11 August 1706 – 1 February 1756).
Relevant evidence: Yes