In 1544 he resigned his rights over Anhalt-Dessau in favor of his cousins, but retained his rights over Anhalt-Bernburg, where he had enlarged the existing castle in 1538 by the Wolfgang wing which made it the largest Renaissance castle in North Germany.
Aastal 1544 loobus ta oma õigustest Anhalt-Dessau üle oma nõo kasuks, kuid säilitas oma õigused Anhalt-Bernburgi üle, kus ta aastal 1538 laiendas lossi Wolfgangi tiivaga, mis tegi sellest suurima renessanss lossi Põhja-Saksamaal.