Peace of Passau
On 15 and 16 March 1552, Henry IV met Elector Maurice of Saxony in Leipzig and prepared him for a meeting between Maurice and Ferdinand, which took place on 18 April 1552 in Linz. They agreed on principles that formed the foundation for an agreement reached in Passau on 22 Juli 1552. King Ferdinand then asked Henry IV to convince Emperor Charles V and the latter signed the Peace of Passau on 15 August in Munich.