The paper deals with the issue of occult knowledge at the European medieval court and the attitude of the rulers towards those "marginal sciences" that were promoted there. It starts from the fact that the medieval view of such knowledge is diametrically opposed to today's, and that they are often classified in the rational spectrum. In doing so, the paper better deals with the concepts of astrology and alchemy, often located within the concept of magic, which is also defined in the paper. All concepts have been observed within the medieval sciences, in order to obtain basic determinants and insights into the above branches of medieval knowledge. Recognizing medieval knowledge, the work also deals with the relationship between occult knowledge and the intellectual elite, which, despite criticism, tried to justify and accept parts of such knowledge. Such individuals are often labeled as wizards, as seen in the examples of Roger Bacon and Albert the Great. After realizing the relationship of the intellectual elite with occult knowledge, the focus shifts to the medieval court. At the same time, intellectuals were present and in the service of the king practiced various practices to help the ruler on a political and private level. First, the presence of such a practice is observed through literary examples of medieval literature, which serve as an illustration of medieval reality. After that, the focus is on real historical examples, and the relationship between rulers and occult knowledge is observed on the examples of two prominent and developed medieval courts - Frederick II and Matthias Corvinus.