The study deals with an important Slovak lawyer, university lecturer and writer Anton Vavrinec Ottmayer who lived and worked in the capital of the Hungarian Kingdom for the first two thirds of the 19th century. The paper deals mainly with the lesser-known aspects of his career, in particular his scientific career within the Faculty of Law, where he was Dean for two years (1832–1834). He lectured on statistics, mining law and also published on the law of substitution. His literary works were written in Slovak, his professional legal works in Latin and German. In addition, he worked as an attorney and agent (lawyer) at the military court. In 1849 he was accused of insulting the majesty by the Austrian authorities, he was convicted and spent one year in prison. This put an end to his previous university career and he therefore started his own business. His aim was to build a waterworks in Pest. His activities were not always successful, he lost his house at auction and tax lawsuits were also brought against him. To this day, it is not entirely clear exactly when he died. Ottmayer’s life well documents the developments of Hungarian capital, the existential dilemmas, professional and political challenges for lawyers at the time. It also documents the university world and the professional issues that resonated in the professional press of the first half of the 19th century.