The author wrote in this paper about the life of a Hungarian diplomat, politician and historian Benjamin Kállay. Along with his personal and public life, the author specifically shed light to Kállay's political ideas, political formation, interpreted processes that significantly influenced Kállay himself, but also addressed details from his private life. Benjamin Kállay was born in Pest in 1839 and was not a participant in the Hungarian Revolution, but during his early days the ideas of the participants in the Hungarian Revolution had made a great impact on Kállay which made him recognizable within the Hungarian elite. In 1868 he became Consul General of the Austro - Hungarian Monarchy in Belgrade with the task of improving the position of the Monarchy in Serbia and an even greater task – suppressing Russian influence over and in Serbia. He had left Belgrade in 1875 due to personal ambitions and entered the Hungarian Parliament, but his parliamentary career did not last long as some opportunities had started to spark in the Balkans which led the Austro-Hungarian Monarchy to re-seek the services of Kállay as a great connoisseur of Balkan opportunities and possibilities. He had worked in the foreign ministry but did not take the title nor a position of a joint foreign minister. In 1882 he became joint minister of finance, thereby gaining responsibility over Bosnia and Herzegovina. The ideas on the position of Bosnia and Herzegovina he had been representing were opposite to those he represented in his book, Povijest Srba. His main focus had been to create a Bosnian identity, but such, then considered, absurd policy, deemed unsuccessful from its start due to ever growing Croatian and Serbian nationalistic moves. Nearing the end of his life, he had started showing support for the Croatian national movement. He died in the year of 1903 in Vienna.