Question: What is the date of death of Duchess Louise Frederica Of Württemberg's mother?
Sentence (from "Henrietta Maria of Brandenburg-Schwedt"): Henriette Maria of Brandenburg-Schwedt (2 March 1702 probably in Berlin – 7 May 1782 in Köpenick), was a granddaughter of the "Great Elector" Frederick William of Brandenburg.
Relevant evidence: Yes