"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 ...
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Brandenburg. She was the daughter of Philip William, Margrave of Brandenburg-Schwedt (1669-1711), the eldest son of the elector´s second marriage with Sophia Dorothea of Schleswig-Holstein-Sonderburg-Glücksburg. Her mother was Johanna Charlotte (1682-1750), the daughter of Prince John George II, Prince of Anhalt-Dessau." - (en.wikipedia.org 31.01.2020)
