"Éléonore Marie Desmier d´Olbreuse (3 or 7 January 1639 – 5 February 1722), was a French noblewoman, who became firstly the mistress and later wife of ...
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George William of Brunswick, Duke of Lauenburg and Prince of Celle. She was the mother of Sophia Dorothea of Celle, who was the wife of George I of Great Britain. Thus she is the maternal grandmother of George II." - (en.wikipedia.org 30.10.2020)
