 Wahnwegen lay in the "Remigiusland", and thereby was originally subject to the lordship of the Bishopric of Reims, but in terms of ecclesiastical administration, it belonged to the Archbishopric of Mainz.Going by the then customary principle of "cuius regio, eius religio", when the Reformation was introduced about 1534, all subjects, as required by the newly converted Ducal administration, likewise had to convert, to Lutheranism, and then in 1588, on Count Palatine Johannes I's orders, to Calvinism.After the Thirty Years' War, it was theoretically possible to choose one's religion, although the villagers in Wahnwegen remained overwhelmingly Calvinist, or at least generally Protestant after the Lutheran and Reformed faiths were united in 1817.