The paper deals with the topic of evangelical preachers of the Helvetic and the Augsburg Confession coming from the Hungarian part of the Habsburg Monarchy, after the Patent of Toleration was issued, and establishing tolerance evangelical congregations in Bohemia and Moravia. Based on studying the sources of particular tolerance Czech congregations (for example Moraveč, Humpolec, Dvakačovice, Lozice, Raná, Sány, Prague), the process of forming a new social stratum of the petty intelligentsia, whose creation was conditioned by the Enlightenment reforms, is outlined. The text shows how the Hungarian preachers made the first contacts with the emerging evangelical communities, gives an idea of the circumstances of their arrival, describes the way of their adapting to an unfamiliar environment and their effort to stabilize the congregations. These particular findings are generalized in order to define some common characteristics typical of this group of Enlightenment intellectuals., Gabriela Krejčová Zavadilová a Hana Stoklasová., and Obsahuje bibliografické odkazy