Christian August, Prince of Anhalt-Zerbst
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Christian Augustus of Anhalt-Zerbst (November 29, 1690 - March 16, 1747) married, on November 8, 1727, Johanna Elisabeth von Schleswig-Holstein-Gottorp (October 24, 1712 - May 30, 1760).
They were the parents of Catherine the Great, Empress of Russia.
Christian Augustus was the a son of Johann Ludwig of Anhalt-Zerbst and Christine Eleonore von Zeutch. His paternal grandparents were John of Anhalt-Zerbst and Sofie Auguste of Holstein-Gottorp, a daughter of Frederick III of Holstein-Gottorp and Marie Elisabeth of Saxony.