Question: What is the date of death of Karl Georg August, Hereditary Prince Of Brunswick-Wolfenbüttel's mother?
Sentence (from "Karl Georg August, Hereditary Prince of Brunswick-Wolfenbüttel"): Karl Georg August, Hereditary Prince of Brunswick-Wolfenbüttel (8 February 1766 in London – 20 September 1806 in Antoinettenruh) was the heir to the Duchy of Brunswick as the eldest son of Charles William Ferdinand, Duke of Brunswick-Wolfenbüttel and Princess Augusta of Great Britain.
Relevant evidence: Yes