The paper discusses the influence of the Revolution of 1848 on the law of the Principality (later Kingdom) of Serbia, where young liberally-minded men, educated abroad, brought modern ideas of political representation and debate after the “Serbian Revolution” in Hungary in 1848-49. The author focuses on parliamentarism as the primary and freedom of press as the secondary demand of this liberal intelligentsia, and traces their evolution over four decades – from the St Peter Assembly of 1848, that first made these demands, to the Constitution of 1888, that finally fully enshrined them in positive law.