Question: What is the date of death of Augustus Louis, Prince Of Anhalt-Köthen's mother?
Sentence (from "Karl George Lebrecht, Prince of Anhalt-Köthen"): Karl George Lebrecht of Anhalt- Köthen( Köthen, 15 August 1730 – Semlin, 17 October 1789), was a German prince of the House of Ascania and ruler of the principality of Anhalt- Köthen.
Relevant evidence: No