 Bartholomäus Meier, one of Landgrave William's theologians, replied, but could not prevail against Hunnius' learned eloquence.In 1592 Hunnius removed to Wittenberg.In the electorate of Saxony, Calvinism had made great headway under the elector Christian, but his successor, Duke Frederick William, desired to introduce Lutheran orthodoxy, and for this purpose called the Swabian theologians, among them Hunnius, to Wittenberg.