"Johanna Magdalene of Saxe-Weissenfels (17 March 1708 – 25 January 1760), was a Duchess consort of Courland and by marriage member of the House of Kettler. ...
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By birth she was member of the Saxe-Weissenfels line of the House of Wettin." - (en.wikipedia.org 14.09.2022)
