Who married Christian August, Prince of Anhalt-Zerbst?

Christian August, Prince of Anhalt-Zerbst (29 November 1690, in Dornburg – 16 March 1747, in Zerbst) was a German prince of the House of Ascania, and the father of Catherine the Great of Russia.

He was a ruler of the Principality of Anhalt-Dornburg. From 1742, he was a ruler of the entire Principality of Anhalt-Zerbst. He was also a Prussian Generalfeldmarschall.

Joanna Elisabeth of Holstein-Gottorp (24 October 1712 – 30 May 1760) was a member of the German House of Holstein-Gottorp, a princess consort of Anhalt-Zerbst by marriage, and the regent of Anhalt-Zerbst from 1747 to 1752 on behalf of her minor son, Frederick Augustus. She is best known as the mother of Catherine the Great.