 Such attempted (poorly enforced) prohibitions continued until 1543.Sigismund's son Sigismund II Augustus ("Zygmunt II August"), a monarch of a much more tolerant attitude, guaranteed the freedom of the Lutheran religion practice in all of Royal Prussia by 1559.Besides Lutheranism, which, within the Polish Crown, ultimately found substantial following mainly in the cities of Royal Prussia and western Greater Poland, the teachings of the persecuted Anabaptists and Unitarians, and in Greater Poland the Czech Brothers, were met, at least among the "szlachta", with a more sporadic response.