Declaratio Ferdinandei

The Declaratio Ferdinandei (English: Declaration of Ferdinand) was a clause in the Peace of Augsburg, signed in 1555 to end conflicts between Catholics and Protestants within the Holy Roman Empire. The Peace created the principle of Cuius regio, eius religio (Latin for "whose realm, his religion"), which meant that the religion of the ruler decided the religion of the inhabitants. The Declaratio Ferdinandei exempted knights and some of the cities under the jurisdiction of an ecclesiastical prince if they had practiced Lutheranism for some time (Lutheranism was the only branch of Protestantism recognized under the Peace). The provision was not publicized as part of the treaty, and was kept secret for almost two decades.

Declaratio Ferdinandei

The Declaratio Ferdinandei (English: Declaration of Ferdinand) was a clause in the Peace of Augsburg, signed in 1555 to end conflicts between Catholics and Protestants within the Holy Roman Empire. The Peace created the principle of Cuius regio, eius religio (Latin for "whose realm, his religion"), which meant that the religion of the ruler decided the religion of the inhabitants. The Declaratio Ferdinandei exempted knights and some of the cities under the jurisdiction of an ecclesiastical prince if they had practiced Lutheranism for some time (Lutheranism was the only branch of Protestantism recognized under the Peace). The provision was not publicized as part of the treaty, and was kept secret for almost two decades.