Question: What is the date of death of Karl Georg August, Hereditary Prince Of Brunswick-Wolfenbüttel's mother?
Sentence (from "Princess Louise of Orange-Nassau"): Princess Frederica" Louise" Wilhelmina of Orange- Nassau( 28 November 1770 – 15 October 1819) was a Hereditary Princess of Brunswick; married 14 October 1790 to Hereditary Prince Charles George August of Brunswick- Wolfenbüttel( 1766 – 20 September 1806), son of Charles William Ferdinand, Duke of Brunswick- Wolfenbüttel.
Relevant evidence: No