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 died and in 1750, the castle was consumed by flames. His widow, Johanna Elisabeth of Holstein-Gottorp, governed the principality of Anhalt-Zerbst for her son Frederick Augustus until 1752.