This article commemorates Péter Nagy at the 200th anniversary of his birth. Péter Nagy was the son of a tailor in Cluj/Kolozsvár and became one of the greatest Calvinist bishops. He studied at the Calvinist College of Kolozsvár and later at Göttingen University. In 1841 he was elected minister of the Reformed community from Cluj/Kolozsvár. He became a teacher of biology and later of theology at the Calvinist College. He translated many literary volumes from English and French.