Passauer Vertrag
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. When the old "Burg" of Köthen was destroyed by a fire in 1547, he made his permanent residence in Bernburg. That year, he participated in the Battle of Mühlberg and was outlawed for it by the Emperor. Wolfgang took refuge in Saxony and was appointed Governor of Magdeburg in 1551 by the Elector Maurice. In 1552 he was released from outlawry under the terms of the Peace of Passau and was restored to his territories.