"Johanna Elisabeth of Holstein-Gottorp (24 October 1712 – 30 May 1760) was a German regent, Princess of Anhalt-Zerbst by marriage to Christian August, Prince of Anhalt-Zerbst, and regent of Anhalt-Zerbst from 1747 to 1752 for her minor son, Frederick Augustus. She is best known as the mother of Catherine the Great of Russia." - (en.wikipedia.org 15.02.2022)
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