In 1747 he died and the castle burnt down in 1750. His widow, Johanna Elisabeth of Holstein-Gottorp, governed the principality of Anhalt-Zerbst for her son Frederick Augustus until 1752.
In 1747, he passed away, and in 1750, the castle was destroyed by fire. His widow, Johanna Elisabeth of Holstein-Gottorp, managed the principality of Anhalt-Zerbst for her son Frederick Augustus until 1752.